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Finding the Fourth Proportional to 12,934.29, 19,400.90 and 3,700.29

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Solution

The fourth proportional to 12,934.29, 19,400.90 and 3,700.29 is: 5,550.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,934.29 : 19,400.90 = 3,700.29 : x
  2. Step 2: Convert to fraction form
    12,934.29/19,400.90 = 3,700.29/x
  3. Step 3: Cross multiply
    12,934.29x = 19,400.90 × 3,700.29
  4. Step 4: Simplify right side
    12,934.29x = 71,788,937.76
  5. Step 5: Solve for x
    x = 71,788,937.76/12,934.29
  6. Step 6: Final answer
    x = 5,550.28

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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.