Home / 27,931.50-38,545.61-15,356.25

Finding the Fourth Proportional to 27,931.50, 38,545.61 and 15,356.25

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Solution

The fourth proportional to 27,931.50, 38,545.61 and 15,356.25 is: 21,191.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.50 : 38,545.61 = 15,356.25 : x
  2. Step 2: Convert to fraction form
    27,931.50/38,545.61 = 15,356.25/x
  3. Step 3: Cross multiply
    27,931.50x = 38,545.61 × 15,356.25
  4. Step 4: Simplify right side
    27,931.50x = 591,915,946.78
  5. Step 5: Solve for x
    x = 591,915,946.78/27,931.50
  6. Step 6: Final answer
    x = 21,191.70

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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.