Home / 21,719,565.96-29,978,221.26-12,432,519.72

Finding the Fourth Proportional to 21,719,565.96, 29,978,221.26 and 12,432,519.72

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Solution

The fourth proportional to 21,719,565.96, 29,978,221.26 and 12,432,519.72 is: 17,159,865.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719,565.96 : 29,978,221.26 = 12,432,519.72 : x
  2. Step 2: Convert to fraction form
    21,719,565.96/29,978,221.26 = 12,432,519.72/x
  3. Step 3: Cross multiply
    21,719,565.96x = 29,978,221.26 × 12,432,519.72
  4. Step 4: Simplify right side
    21,719,565.96x = 372,704,826,985,473.31
  5. Step 5: Solve for x
    x = 372,704,826,985,473.31/21,719,565.96
  6. Step 6: Final answer
    x = 17,159,865.33

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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.