Home / 15,438.86-21,304.36-9,064.76

Finding the Fourth Proportional to 15,438.86, 21,304.36 and 9,064.76

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Solution

The fourth proportional to 15,438.86, 21,304.36 and 9,064.76 is: 12,508.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.86 : 21,304.36 = 9,064.76 : x
  2. Step 2: Convert to fraction form
    15,438.86/21,304.36 = 9,064.76/x
  3. Step 3: Cross multiply
    15,438.86x = 21,304.36 × 9,064.76
  4. Step 4: Simplify right side
    15,438.86x = 193,118,910.35
  5. Step 5: Solve for x
    x = 193,118,910.35/15,438.86
  6. Step 6: Final answer
    x = 12,508.63

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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.