Home / 28,000,686.20-42,001,029.30-20,347,935.80

Finding the Fourth Proportional to 28,000,686.20, 42,001,029.30 and 20,347,935.80

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Solution

The fourth proportional to 28,000,686.20, 42,001,029.30 and 20,347,935.80 is: 30,521,903.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000,686.20 : 42,001,029.30 = 20,347,935.80 : x
  2. Step 2: Convert to fraction form
    28,000,686.20/42,001,029.30 = 20,347,935.80/x
  3. Step 3: Cross multiply
    28,000,686.20x = 42,001,029.30 × 20,347,935.80
  4. Step 4: Simplify right side
    28,000,686.20x = 854,634,247,730,318.88
  5. Step 5: Solve for x
    x = 854,634,247,730,318.88/28,000,686.20
  6. Step 6: Final answer
    x = 30,521,903.70

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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.