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Finding the Fourth Proportional to 12,603.70, 18,776.21 and 12,035.08

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Solution

The fourth proportional to 12,603.70, 18,776.21 and 12,035.08 is: 17,929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.70 : 18,776.21 = 12,035.08 : x
  2. Step 2: Convert to fraction form
    12,603.70/18,776.21 = 12,035.08/x
  3. Step 3: Cross multiply
    12,603.70x = 18,776.21 × 12,035.08
  4. Step 4: Simplify right side
    12,603.70x = 225,973,189.45
  5. Step 5: Solve for x
    x = 225,973,189.45/12,603.70
  6. Step 6: Final answer
    x = 17,929.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.