Home / 20,124,701.10-30,172,289.40-7,988,163.30

Finding the Fourth Proportional to 20,124,701.10, 30,172,289.40 and 7,988,163.30

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Solution

The fourth proportional to 20,124,701.10, 30,172,289.40 and 7,988,163.30 is: 11,976,385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124,701.10 : 30,172,289.40 = 7,988,163.30 : x
  2. Step 2: Convert to fraction form
    20,124,701.10/30,172,289.40 = 7,988,163.30/x
  3. Step 3: Cross multiply
    20,124,701.10x = 30,172,289.40 × 7,988,163.30
  4. Step 4: Simplify right side
    20,124,701.10x = 241,021,174,862,059
  5. Step 5: Solve for x
    x = 241,021,174,862,059/20,124,701.10
  6. Step 6: Final answer
    x = 11,976,385.32

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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.