Home / 20,707.32-28,576.17-11,275.86

Finding the Fourth Proportional to 20,707.32, 28,576.17 and 11,275.86

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Solution

The fourth proportional to 20,707.32, 28,576.17 and 11,275.86 is: 15,560.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.32 : 28,576.17 = 11,275.86 : x
  2. Step 2: Convert to fraction form
    20,707.32/28,576.17 = 11,275.86/x
  3. Step 3: Cross multiply
    20,707.32x = 28,576.17 × 11,275.86
  4. Step 4: Simplify right side
    20,707.32x = 322,220,892.26
  5. Step 5: Solve for x
    x = 322,220,892.26/20,707.32
  6. Step 6: Final answer
    x = 15,560.72

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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.