Home / 15,207,812.64-20,985,978.96-8,681,182.56

Finding the Fourth Proportional to 15,207,812.64, 20,985,978.96 and 8,681,182.56

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Solution

The fourth proportional to 15,207,812.64, 20,985,978.96 and 8,681,182.56 is: 11,979,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,207,812.64 : 20,985,978.96 = 8,681,182.56 : x
  2. Step 2: Convert to fraction form
    15,207,812.64/20,985,978.96 = 8,681,182.56/x
  3. Step 3: Cross multiply
    15,207,812.64x = 20,985,978.96 × 8,681,182.56
  4. Step 4: Simplify right side
    15,207,812.64x = 182,183,114,552,078.97
  5. Step 5: Solve for x
    x = 182,183,114,552,078.97/15,207,812.64
  6. Step 6: Final answer
    x = 11,979,573.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.