Home / 21,160,861.12-29,150,156.64-15,342,546.88

Finding the Fourth Proportional to 21,160,861.12, 29,150,156.64 and 15,342,546.88

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Solution

The fourth proportional to 21,160,861.12, 29,150,156.64 and 15,342,546.88 is: 21,135,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160,861.12 : 29,150,156.64 = 15,342,546.88 : x
  2. Step 2: Convert to fraction form
    21,160,861.12/29,150,156.64 = 15,342,546.88/x
  3. Step 3: Cross multiply
    21,160,861.12x = 29,150,156.64 × 15,342,546.88
  4. Step 4: Simplify right side
    21,160,861.12x = 447,237,644,808,543.31
  5. Step 5: Solve for x
    x = 447,237,644,808,543.31/21,160,861.12
  6. Step 6: Final answer
    x = 21,135,134.45

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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.