Home / 12,253,305.60-18,379,958.40-7,718,342.40

Finding the Fourth Proportional to 12,253,305.60, 18,379,958.40 and 7,718,342.40

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Solution

The fourth proportional to 12,253,305.60, 18,379,958.40 and 7,718,342.40 is: 11,577,513.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,253,305.60 : 18,379,958.40 = 7,718,342.40 : x
  2. Step 2: Convert to fraction form
    12,253,305.60/18,379,958.40 = 7,718,342.40/x
  3. Step 3: Cross multiply
    12,253,305.60x = 18,379,958.40 × 7,718,342.40
  4. Step 4: Simplify right side
    12,253,305.60x = 141,862,812,228,956.16
  5. Step 5: Solve for x
    x = 141,862,812,228,956.16/12,253,305.60
  6. Step 6: Final answer
    x = 11,577,513.60

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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.