Home / 12,127,967.90-18,191,951.85-7,344,998.90

Finding the Fourth Proportional to 12,127,967.90, 18,191,951.85 and 7,344,998.90

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Solution

The fourth proportional to 12,127,967.90, 18,191,951.85 and 7,344,998.90 is: 11,017,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,967.90 : 18,191,951.85 = 7,344,998.90 : x
  2. Step 2: Convert to fraction form
    12,127,967.90/18,191,951.85 = 7,344,998.90/x
  3. Step 3: Cross multiply
    12,127,967.90x = 18,191,951.85 × 7,344,998.90
  4. Step 4: Simplify right side
    12,127,967.90x = 133,619,866,327,102.98
  5. Step 5: Solve for x
    x = 133,619,866,327,102.98/12,127,967.90
  6. Step 6: Final answer
    x = 11,017,498.35

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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.