Home / 11,126.88-16,678.59-7,615.95

Finding the Fourth Proportional to 11,126.88, 16,678.59 and 7,615.95

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Solution

The fourth proportional to 11,126.88, 16,678.59 and 7,615.95 is: 11,415.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,126.88 : 16,678.59 = 7,615.95 : x
  2. Step 2: Convert to fraction form
    11,126.88/16,678.59 = 7,615.95/x
  3. Step 3: Cross multiply
    11,126.88x = 16,678.59 × 7,615.95
  4. Step 4: Simplify right side
    11,126.88x = 127,023,216.41
  5. Step 5: Solve for x
    x = 127,023,216.41/11,126.88
  6. Step 6: Final answer
    x = 11,415.89

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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.