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Finding the Fourth Proportional to 12,624.76, 17,421.14 and 7,319.92

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Solution

The fourth proportional to 12,624.76, 17,421.14 and 7,319.92 is: 10,100.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.76 : 17,421.14 = 7,319.92 : x
  2. Step 2: Convert to fraction form
    12,624.76/17,421.14 = 7,319.92/x
  3. Step 3: Cross multiply
    12,624.76x = 17,421.14 × 7,319.92
  4. Step 4: Simplify right side
    12,624.76x = 127,521,358.52
  5. Step 5: Solve for x
    x = 127,521,358.52/12,624.76
  6. Step 6: Final answer
    x = 10,100.89

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