Home / 12,402,521.70-18,603,782.55-9,043,289.70

Finding the Fourth Proportional to 12,402,521.70, 18,603,782.55 and 9,043,289.70

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Solution

The fourth proportional to 12,402,521.70, 18,603,782.55 and 9,043,289.70 is: 13,564,934.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402,521.70 : 18,603,782.55 = 9,043,289.70 : x
  2. Step 2: Convert to fraction form
    12,402,521.70/18,603,782.55 = 9,043,289.70/x
  3. Step 3: Cross multiply
    12,402,521.70x = 18,603,782.55 × 9,043,289.70
  4. Step 4: Simplify right side
    12,402,521.70x = 168,239,395,115,454.72
  5. Step 5: Solve for x
    x = 168,239,395,115,454.72/12,402,521.70
  6. Step 6: Final answer
    x = 13,564,934.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.