Home / 27,981.30-38,614.10-15,406.04

Finding the Fourth Proportional to 27,981.30, 38,614.10 and 15,406.04

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Solution

The fourth proportional to 27,981.30, 38,614.10 and 15,406.04 is: 21,260.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.30 : 38,614.10 = 15,406.04 : x
  2. Step 2: Convert to fraction form
    27,981.30/38,614.10 = 15,406.04/x
  3. Step 3: Cross multiply
    27,981.30x = 38,614.10 × 15,406.04
  4. Step 4: Simplify right side
    27,981.30x = 594,890,369.16
  5. Step 5: Solve for x
    x = 594,890,369.16/27,981.30
  6. Step 6: Final answer
    x = 21,260.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.