Home / 20,160,979.20-30,241,468.80-12,098,822.40

Finding the Fourth Proportional to 20,160,979.20, 30,241,468.80 and 12,098,822.40

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Solution

The fourth proportional to 20,160,979.20, 30,241,468.80 and 12,098,822.40 is: 18,148,233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160,979.20 : 30,241,468.80 = 12,098,822.40 : x
  2. Step 2: Convert to fraction form
    20,160,979.20/30,241,468.80 = 12,098,822.40/x
  3. Step 3: Cross multiply
    20,160,979.20x = 30,241,468.80 × 12,098,822.40
  4. Step 4: Simplify right side
    20,160,979.20x = 365,886,160,126,341.12
  5. Step 5: Solve for x
    x = 365,886,160,126,341.12/20,160,979.20
  6. Step 6: Final answer
    x = 18,148,233.60

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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.