Home / 31,011.86-42,795.14-16,864.71

Finding the Fourth Proportional to 31,011.86, 42,795.14 and 16,864.71

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Solution

The fourth proportional to 31,011.86, 42,795.14 and 16,864.71 is: 23,272.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,011.86 : 42,795.14 = 16,864.71 : x
  2. Step 2: Convert to fraction form
    31,011.86/42,795.14 = 16,864.71/x
  3. Step 3: Cross multiply
    31,011.86x = 42,795.14 × 16,864.71
  4. Step 4: Simplify right side
    31,011.86x = 721,727,380.70
  5. Step 5: Solve for x
    x = 721,727,380.70/31,011.86
  6. Step 6: Final answer
    x = 23,272.62

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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.