Home / 15,548.46-21,456.78-8,474.88

Finding the Fourth Proportional to 15,548.46, 21,456.78 and 8,474.88

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Solution

The fourth proportional to 15,548.46, 21,456.78 and 8,474.88 is: 11,695.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,548.46 : 21,456.78 = 8,474.88 : x
  2. Step 2: Convert to fraction form
    15,548.46/21,456.78 = 8,474.88/x
  3. Step 3: Cross multiply
    15,548.46x = 21,456.78 × 8,474.88
  4. Step 4: Simplify right side
    15,548.46x = 181,843,635.69
  5. Step 5: Solve for x
    x = 181,843,635.69/15,548.46
  6. Step 6: Final answer
    x = 11,695.28

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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.