Home / 15,534.20-21,436.56-8,460.68

Finding the Fourth Proportional to 15,534.20, 21,436.56 and 8,460.68

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Solution

The fourth proportional to 15,534.20, 21,436.56 and 8,460.68 is: 11,675.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.20 : 21,436.56 = 8,460.68 : x
  2. Step 2: Convert to fraction form
    15,534.20/21,436.56 = 8,460.68/x
  3. Step 3: Cross multiply
    15,534.20x = 21,436.56 × 8,460.68
  4. Step 4: Simplify right side
    15,534.20x = 181,367,874.46
  5. Step 5: Solve for x
    x = 181,367,874.46/15,534.20
  6. Step 6: Final answer
    x = 11,675.39

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Half scale
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Double scale
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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.