Home / 10,278.30-15,417.45-6,997.80

Finding the Fourth Proportional to 10,278.30, 15,417.45 and 6,997.80

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Solution

The fourth proportional to 10,278.30, 15,417.45 and 6,997.80 is: 10,496.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.30 : 15,417.45 = 6,997.80 : x
  2. Step 2: Convert to fraction form
    10,278.30/15,417.45 = 6,997.80/x
  3. Step 3: Cross multiply
    10,278.30x = 15,417.45 × 6,997.80
  4. Step 4: Simplify right side
    10,278.30x = 107,888,231.61
  5. Step 5: Solve for x
    x = 107,888,231.61/10,278.30
  6. Step 6: Final answer
    x = 10,496.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.