Home / 12,024.18-18,036.27-7,890.35

Finding the Fourth Proportional to 12,024.18, 18,036.27 and 7,890.35

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Solution

The fourth proportional to 12,024.18, 18,036.27 and 7,890.35 is: 11,835.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,024.18 : 18,036.27 = 7,890.35 : x
  2. Step 2: Convert to fraction form
    12,024.18/18,036.27 = 7,890.35/x
  3. Step 3: Cross multiply
    12,024.18x = 18,036.27 × 7,890.35
  4. Step 4: Simplify right side
    12,024.18x = 142,312,392.81
  5. Step 5: Solve for x
    x = 142,312,392.81/12,024.18
  6. Step 6: Final answer
    x = 11,835.52

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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.