Home / 20,666,966.81-31,007,424.29-9,150,861.87

Finding the Fourth Proportional to 20,666,966.81, 31,007,424.29 and 9,150,861.87

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Solution

The fourth proportional to 20,666,966.81, 31,007,424.29 and 9,150,861.87 is: 13,729,380.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666,966.81 : 31,007,424.29 = 9,150,861.87 : x
  2. Step 2: Convert to fraction form
    20,666,966.81/31,007,424.29 = 9,150,861.87/x
  3. Step 3: Cross multiply
    20,666,966.81x = 31,007,424.29 × 9,150,861.87
  4. Step 4: Simplify right side
    20,666,966.81x = 283,744,656,576,518.50
  5. Step 5: Solve for x
    x = 283,744,656,576,518.50/20,666,966.81
  6. Step 6: Final answer
    x = 13,729,380.77

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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.