Home / 13,943,916.90-20,915,875.35-8,487,789.30

Finding the Fourth Proportional to 13,943,916.90, 20,915,875.35 and 8,487,789.30

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Solution

The fourth proportional to 13,943,916.90, 20,915,875.35 and 8,487,789.30 is: 12,731,683.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943,916.90 : 20,915,875.35 = 8,487,789.30 : x
  2. Step 2: Convert to fraction form
    13,943,916.90/20,915,875.35 = 8,487,789.30/x
  3. Step 3: Cross multiply
    13,943,916.90x = 20,915,875.35 × 8,487,789.30
  4. Step 4: Simplify right side
    13,943,916.90x = 177,529,542,995,863.78
  5. Step 5: Solve for x
    x = 177,529,542,995,863.78/13,943,916.90
  6. Step 6: Final answer
    x = 12,731,683.95

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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.