Home / 13,857,027.30-20,785,540.95-12,439,851.30

Finding the Fourth Proportional to 13,857,027.30, 20,785,540.95 and 12,439,851.30

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Solution

The fourth proportional to 13,857,027.30, 20,785,540.95 and 12,439,851.30 is: 18,659,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857,027.30 : 20,785,540.95 = 12,439,851.30 : x
  2. Step 2: Convert to fraction form
    13,857,027.30/20,785,540.95 = 12,439,851.30/x
  3. Step 3: Cross multiply
    13,857,027.30x = 20,785,540.95 × 12,439,851.30
  4. Step 4: Simplify right side
    13,857,027.30x = 258,569,038,608,060.75
  5. Step 5: Solve for x
    x = 258,569,038,608,060.75/13,857,027.30
  6. Step 6: Final answer
    x = 18,659,776.95

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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.