Home / 20,776,947.80-31,165,421.70-15,738,099.80

Finding the Fourth Proportional to 20,776,947.80, 31,165,421.70 and 15,738,099.80

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Solution

The fourth proportional to 20,776,947.80, 31,165,421.70 and 15,738,099.80 is: 23,607,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,947.80 : 31,165,421.70 = 15,738,099.80 : x
  2. Step 2: Convert to fraction form
    20,776,947.80/31,165,421.70 = 15,738,099.80/x
  3. Step 3: Cross multiply
    20,776,947.80x = 31,165,421.70 × 15,738,099.80
  4. Step 4: Simplify right side
    20,776,947.80x = 490,484,517,023,685.69
  5. Step 5: Solve for x
    x = 490,484,517,023,685.69/20,776,947.80
  6. Step 6: Final answer
    x = 23,607,149.70

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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.