Home / 31,691.04-43,740.57-20,937.68

Finding the Fourth Proportional to 31,691.04, 43,740.57 and 20,937.68

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Solution

The fourth proportional to 31,691.04, 43,740.57 and 20,937.68 is: 28,898.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,691.04 : 43,740.57 = 20,937.68 : x
  2. Step 2: Convert to fraction form
    31,691.04/43,740.57 = 20,937.68/x
  3. Step 3: Cross multiply
    31,691.04x = 43,740.57 × 20,937.68
  4. Step 4: Simplify right side
    31,691.04x = 915,826,057.68
  5. Step 5: Solve for x
    x = 915,826,057.68/31,691.04
  6. Step 6: Final answer
    x = 28,898.58

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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.