Home / 20,747,281.40-31,120,922.10-10,543,614.20

Finding the Fourth Proportional to 20,747,281.40, 31,120,922.10 and 10,543,614.20

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Solution

The fourth proportional to 20,747,281.40, 31,120,922.10 and 10,543,614.20 is: 15,815,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747,281.40 : 31,120,922.10 = 10,543,614.20 : x
  2. Step 2: Convert to fraction form
    20,747,281.40/31,120,922.10 = 10,543,614.20/x
  3. Step 3: Cross multiply
    20,747,281.40x = 31,120,922.10 × 10,543,614.20
  4. Step 4: Simplify right side
    20,747,281.40x = 328,126,996,170,653.81
  5. Step 5: Solve for x
    x = 328,126,996,170,653.81/20,747,281.40
  6. Step 6: Final answer
    x = 15,815,421.30

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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.