Home / 21,077,207.82-29,070,497.16-18,142,018.92

Finding the Fourth Proportional to 21,077,207.82, 29,070,497.16 and 18,142,018.92

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Solution

The fourth proportional to 21,077,207.82, 29,070,497.16 and 18,142,018.92 is: 25,022,171.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077,207.82 : 29,070,497.16 = 18,142,018.92 : x
  2. Step 2: Convert to fraction form
    21,077,207.82/29,070,497.16 = 18,142,018.92/x
  3. Step 3: Cross multiply
    21,077,207.82x = 29,070,497.16 × 18,142,018.92
  4. Step 4: Simplify right side
    21,077,207.82x = 527,397,509,490,526.31
  5. Step 5: Solve for x
    x = 527,397,509,490,526.31/21,077,207.82
  6. Step 6: Final answer
    x = 25,022,171.53

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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.