Home / 13,943,921.40-20,915,882.10-8,487,793.80

Finding the Fourth Proportional to 13,943,921.40, 20,915,882.10 and 8,487,793.80

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Solution

The fourth proportional to 13,943,921.40, 20,915,882.10 and 8,487,793.80 is: 12,731,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943,921.40 : 20,915,882.10 = 8,487,793.80 : x
  2. Step 2: Convert to fraction form
    13,943,921.40/20,915,882.10 = 8,487,793.80/x
  3. Step 3: Cross multiply
    13,943,921.40x = 20,915,882.10 × 8,487,793.80
  4. Step 4: Simplify right side
    13,943,921.40x = 177,529,694,409,911
  5. Step 5: Solve for x
    x = 177,529,694,409,911/13,943,921.40
  6. Step 6: Final answer
    x = 12,731,690.70

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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.