Home / 31,344.30-47,032.61-20,821.59

Finding the Fourth Proportional to 31,344.30, 47,032.61 and 20,821.59

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Solution

The fourth proportional to 31,344.30, 47,032.61 and 20,821.59 is: 31,243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,344.30 : 47,032.61 = 20,821.59 : x
  2. Step 2: Convert to fraction form
    31,344.30/47,032.61 = 20,821.59/x
  3. Step 3: Cross multiply
    31,344.30x = 47,032.61 × 20,821.59
  4. Step 4: Simplify right side
    31,344.30x = 979,293,617.94
  5. Step 5: Solve for x
    x = 979,293,617.94/31,344.30
  6. Step 6: Final answer
    x = 31,243.12

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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.