Home / 12,991,242.30-19,486,863.45-12,294,512.70

Finding the Fourth Proportional to 12,991,242.30, 19,486,863.45 and 12,294,512.70

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Solution

The fourth proportional to 12,991,242.30, 19,486,863.45 and 12,294,512.70 is: 18,441,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991,242.30 : 19,486,863.45 = 12,294,512.70 : x
  2. Step 2: Convert to fraction form
    12,991,242.30/19,486,863.45 = 12,294,512.70/x
  3. Step 3: Cross multiply
    12,991,242.30x = 19,486,863.45 × 12,294,512.70
  4. Step 4: Simplify right side
    12,991,242.30x = 239,581,490,169,190.78
  5. Step 5: Solve for x
    x = 239,581,490,169,190.78/12,991,242.30
  6. Step 6: Final answer
    x = 18,441,769.05

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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.