Home / 20,780.68-31,177.26-9,693.82

Finding the Fourth Proportional to 20,780.68, 31,177.26 and 9,693.82

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Solution

The fourth proportional to 20,780.68, 31,177.26 and 9,693.82 is: 14,543.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.68 : 31,177.26 = 9,693.82 : x
  2. Step 2: Convert to fraction form
    20,780.68/31,177.26 = 9,693.82/x
  3. Step 3: Cross multiply
    20,780.68x = 31,177.26 × 9,693.82
  4. Step 4: Simplify right side
    20,780.68x = 302,226,746.53
  5. Step 5: Solve for x
    x = 302,226,746.53/20,780.68
  6. Step 6: Final answer
    x = 14,543.64

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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.