Home / 39,711.76-54,800.08-21,809.12

Finding the Fourth Proportional to 39,711.76, 54,800.08 and 21,809.12

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Solution

The fourth proportional to 39,711.76, 54,800.08 and 21,809.12 is: 30,095.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,711.76 : 54,800.08 = 21,809.12 : x
  2. Step 2: Convert to fraction form
    39,711.76/54,800.08 = 21,809.12/x
  3. Step 3: Cross multiply
    39,711.76x = 54,800.08 × 21,809.12
  4. Step 4: Simplify right side
    39,711.76x = 1,195,141,520.73
  5. Step 5: Solve for x
    x = 1,195,141,520.73/39,711.76
  6. Step 6: Final answer
    x = 30,095.41

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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.