Home / 20,854,589.40-31,281,884.10-12,330,538.20

Finding the Fourth Proportional to 20,854,589.40, 31,281,884.10 and 12,330,538.20

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Solution

The fourth proportional to 20,854,589.40, 31,281,884.10 and 12,330,538.20 is: 18,495,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854,589.40 : 31,281,884.10 = 12,330,538.20 : x
  2. Step 2: Convert to fraction form
    20,854,589.40/31,281,884.10 = 12,330,538.20/x
  3. Step 3: Cross multiply
    20,854,589.40x = 31,281,884.10 × 12,330,538.20
  4. Step 4: Simplify right side
    20,854,589.40x = 385,722,466,863,022.62
  5. Step 5: Solve for x
    x = 385,722,466,863,022.62/20,854,589.40
  6. Step 6: Final answer
    x = 18,495,807.30

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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.