Home / 15,548.34-21,456.71-8,474.76

Finding the Fourth Proportional to 15,548.34, 21,456.71 and 8,474.76

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Solution

The fourth proportional to 15,548.34, 21,456.71 and 8,474.76 is: 11,695.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,548.34 : 21,456.71 = 8,474.76 : x
  2. Step 2: Convert to fraction form
    15,548.34/21,456.71 = 8,474.76/x
  3. Step 3: Cross multiply
    15,548.34x = 21,456.71 × 8,474.76
  4. Step 4: Simplify right side
    15,548.34x = 181,840,467.64
  5. Step 5: Solve for x
    x = 181,840,467.64/15,548.34
  6. Step 6: Final answer
    x = 11,695.17

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Half scale
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Double scale
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Similar ratio
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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.