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Finding the Fourth Proportional to 12,458.76, 17,193.10 and 7,153.92

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Solution

The fourth proportional to 12,458.76, 17,193.10 and 7,153.92 is: 9,872.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.76 : 17,193.10 = 7,153.92 : x
  2. Step 2: Convert to fraction form
    12,458.76/17,193.10 = 7,153.92/x
  3. Step 3: Cross multiply
    12,458.76x = 17,193.10 × 7,153.92
  4. Step 4: Simplify right side
    12,458.76x = 122,998,061.95
  5. Step 5: Solve for x
    x = 122,998,061.95/12,458.76
  6. Step 6: Final answer
    x = 9,872.42

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Half scale
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Double scale
Find fourth proportional to 12,459.76, 17,194.48 and 7,154.92
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.