Home / 10,921,065.20-16,405,217.40-7,732,419.20

Finding the Fourth Proportional to 10,921,065.20, 16,405,217.40 and 7,732,419.20

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Solution

The fourth proportional to 10,921,065.20, 16,405,217.40 and 7,732,419.20 is: 11,615,352.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921,065.20 : 16,405,217.40 = 7,732,419.20 : x
  2. Step 2: Convert to fraction form
    10,921,065.20/16,405,217.40 = 7,732,419.20/x
  3. Step 3: Cross multiply
    10,921,065.20x = 16,405,217.40 × 7,732,419.20
  4. Step 4: Simplify right side
    10,921,065.20x = 126,852,018,003,934.08
  5. Step 5: Solve for x
    x = 126,852,018,003,934.08/10,921,065.20
  6. Step 6: Final answer
    x = 11,615,352.14

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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.