Home / 20,688.59-31,032.95-5,695.91

Finding the Fourth Proportional to 20,688.59, 31,032.95 and 5,695.91

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Solution

The fourth proportional to 20,688.59, 31,032.95 and 5,695.91 is: 8,543.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.59 : 31,032.95 = 5,695.91 : x
  2. Step 2: Convert to fraction form
    20,688.59/31,032.95 = 5,695.91/x
  3. Step 3: Cross multiply
    20,688.59x = 31,032.95 × 5,695.91
  4. Step 4: Simplify right side
    20,688.59x = 176,760,822.96
  5. Step 5: Solve for x
    x = 176,760,822.96/20,688.59
  6. Step 6: Final answer
    x = 8,543.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.