Home / 34,351.52-47,406.80-20,920.61

Finding the Fourth Proportional to 34,351.52, 47,406.80 and 20,920.61

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Solution

The fourth proportional to 34,351.52, 47,406.80 and 20,920.61 is: 28,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,351.52 : 47,406.80 = 20,920.61 : x
  2. Step 2: Convert to fraction form
    34,351.52/47,406.80 = 20,920.61/x
  3. Step 3: Cross multiply
    34,351.52x = 47,406.80 × 20,920.61
  4. Step 4: Simplify right side
    34,351.52x = 991,779,344.97
  5. Step 5: Solve for x
    x = 991,779,344.97/34,351.52
  6. Step 6: Final answer
    x = 28,871.49

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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.