Home / 31,345.30-47,034.11-20,822.59

Finding the Fourth Proportional to 31,345.30, 47,034.11 and 20,822.59

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Solution

The fourth proportional to 31,345.30, 47,034.11 and 20,822.59 is: 31,244.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,345.30 : 47,034.11 = 20,822.59 : x
  2. Step 2: Convert to fraction form
    31,345.30/47,034.11 = 20,822.59/x
  3. Step 3: Cross multiply
    31,345.30x = 47,034.11 × 20,822.59
  4. Step 4: Simplify right side
    31,345.30x = 979,371,988.54
  5. Step 5: Solve for x
    x = 979,371,988.54/31,345.30
  6. Step 6: Final answer
    x = 31,244.62

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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.