Home / 11,459.38-15,814.56-6,425.21

Finding the Fourth Proportional to 11,459.38, 15,814.56 and 6,425.21

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Solution

The fourth proportional to 11,459.38, 15,814.56 and 6,425.21 is: 8,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,459.38 : 15,814.56 = 6,425.21 : x
  2. Step 2: Convert to fraction form
    11,459.38/15,814.56 = 6,425.21/x
  3. Step 3: Cross multiply
    11,459.38x = 15,814.56 × 6,425.21
  4. Step 4: Simplify right side
    11,459.38x = 101,611,869.06
  5. Step 5: Solve for x
    x = 101,611,869.06/11,459.38
  6. Step 6: Final answer
    x = 8,867.13

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Half scale
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Double scale
Find fourth proportional to 11,460.38, 15,815.94 and 6,426.21
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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.