Home / 20,642.92-28,470.66-13,566.76

Finding the Fourth Proportional to 20,642.92, 28,470.66 and 13,566.76

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Solution

The fourth proportional to 20,642.92, 28,470.66 and 13,566.76 is: 18,711.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,642.92 : 28,470.66 = 13,566.76 : x
  2. Step 2: Convert to fraction form
    20,642.92/28,470.66 = 13,566.76/x
  3. Step 3: Cross multiply
    20,642.92x = 28,470.66 × 13,566.76
  4. Step 4: Simplify right side
    20,642.92x = 386,254,611.26
  5. Step 5: Solve for x
    x = 386,254,611.26/20,642.92
  6. Step 6: Final answer
    x = 18,711.24

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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.