Home / 12,346,989.30-18,541,479.15-9,155,718.90

Finding the Fourth Proportional to 12,346,989.30, 18,541,479.15 and 9,155,718.90

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Solution

The fourth proportional to 12,346,989.30, 18,541,479.15 and 9,155,718.90 is: 13,749,147.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,346,989.30 : 18,541,479.15 = 9,155,718.90 : x
  2. Step 2: Convert to fraction form
    12,346,989.30/18,541,479.15 = 9,155,718.90/x
  3. Step 3: Cross multiply
    12,346,989.30x = 18,541,479.15 × 9,155,718.90
  4. Step 4: Simplify right side
    12,346,989.30x = 169,760,571,087,610.94
  5. Step 5: Solve for x
    x = 169,760,571,087,610.94/12,346,989.30
  6. Step 6: Final answer
    x = 13,749,147.02

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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.