Home / 20,867,801.40-31,287,122.10-12,343,750.20

Finding the Fourth Proportional to 20,867,801.40, 31,287,122.10 and 12,343,750.20

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Solution

The fourth proportional to 20,867,801.40, 31,287,122.10 and 12,343,750.20 is: 18,507,000.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867,801.40 : 31,287,122.10 = 12,343,750.20 : x
  2. Step 2: Convert to fraction form
    20,867,801.40/31,287,122.10 = 12,343,750.20/x
  3. Step 3: Cross multiply
    20,867,801.40x = 31,287,122.10 × 12,343,750.20
  4. Step 4: Simplify right side
    20,867,801.40x = 386,200,419,679,299.44
  5. Step 5: Solve for x
    x = 386,200,419,679,299.44/20,867,801.40
  6. Step 6: Final answer
    x = 18,507,000.92

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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.