Home / 15,474.81-21,354.13-8,761.20

Finding the Fourth Proportional to 15,474.81, 21,354.13 and 8,761.20

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Solution

The fourth proportional to 15,474.81, 21,354.13 and 8,761.20 is: 12,089.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.81 : 21,354.13 = 8,761.20 : x
  2. Step 2: Convert to fraction form
    15,474.81/21,354.13 = 8,761.20/x
  3. Step 3: Cross multiply
    15,474.81x = 21,354.13 × 8,761.20
  4. Step 4: Simplify right side
    15,474.81x = 187,087,734.63
  5. Step 5: Solve for x
    x = 187,087,734.63/15,474.81
  6. Step 6: Final answer
    x = 12,089.82

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1.5x scale

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.