Home / 20,105,191.60-30,157,787.40-12,452,441.20

Finding the Fourth Proportional to 20,105,191.60, 30,157,787.40 and 12,452,441.20

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Solution

The fourth proportional to 20,105,191.60, 30,157,787.40 and 12,452,441.20 is: 18,678,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105,191.60 : 30,157,787.40 = 12,452,441.20 : x
  2. Step 2: Convert to fraction form
    20,105,191.60/30,157,787.40 = 12,452,441.20/x
  3. Step 3: Cross multiply
    20,105,191.60x = 30,157,787.40 × 12,452,441.20
  4. Step 4: Simplify right side
    20,105,191.60x = 375,538,074,320,600.81
  5. Step 5: Solve for x
    x = 375,538,074,320,600.81/20,105,191.60
  6. Step 6: Final answer
    x = 18,678,661.80

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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.