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Finding the Fourth Proportional to 34,463.80, 51,695.70 and 13,687.30

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Solution

The fourth proportional to 34,463.80, 51,695.70 and 13,687.30 is: 20,530.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,463.80 : 51,695.70 = 13,687.30 : x
  2. Step 2: Convert to fraction form
    34,463.80/51,695.70 = 13,687.30/x
  3. Step 3: Cross multiply
    34,463.80x = 51,695.70 × 13,687.30
  4. Step 4: Simplify right side
    34,463.80x = 707,574,554.61
  5. Step 5: Solve for x
    x = 707,574,554.61/34,463.80
  6. Step 6: Final answer
    x = 20,530.95

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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.