Home / 34,534.20-47,655.36-20,381.88

Finding the Fourth Proportional to 34,534.20, 47,655.36 and 20,381.88

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Solution

The fourth proportional to 34,534.20, 47,655.36 and 20,381.88 is: 28,125.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,534.20 : 47,655.36 = 20,381.88 : x
  2. Step 2: Convert to fraction form
    34,534.20/47,655.36 = 20,381.88/x
  3. Step 3: Cross multiply
    34,534.20x = 47,655.36 × 20,381.88
  4. Step 4: Simplify right side
    34,534.20x = 971,305,828.88
  5. Step 5: Solve for x
    x = 971,305,828.88/34,534.20
  6. Step 6: Final answer
    x = 28,125.91

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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.