Home / 13,432,921.20-20,149,381.80-7,750,220.40

Finding the Fourth Proportional to 13,432,921.20, 20,149,381.80 and 7,750,220.40

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Solution

The fourth proportional to 13,432,921.20, 20,149,381.80 and 7,750,220.40 is: 11,625,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432,921.20 : 20,149,381.80 = 7,750,220.40 : x
  2. Step 2: Convert to fraction form
    13,432,921.20/20,149,381.80 = 7,750,220.40/x
  3. Step 3: Cross multiply
    13,432,921.20x = 20,149,381.80 × 7,750,220.40
  4. Step 4: Simplify right side
    13,432,921.20x = 156,162,149,873,748.72
  5. Step 5: Solve for x
    x = 156,162,149,873,748.72/13,432,921.20
  6. Step 6: Final answer
    x = 11,625,330.60

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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.