Home / 21,139,888.92-29,172,550.52-12,438,625.10

Finding the Fourth Proportional to 21,139,888.92, 29,172,550.52 and 12,438,625.10

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Solution

The fourth proportional to 21,139,888.92, 29,172,550.52 and 12,438,625.10 is: 17,165,010.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,888.92 : 29,172,550.52 = 12,438,625.10 : x
  2. Step 2: Convert to fraction form
    21,139,888.92/29,172,550.52 = 12,438,625.10/x
  3. Step 3: Cross multiply
    21,139,888.92x = 29,172,550.52 × 12,438,625.10
  4. Step 4: Simplify right side
    21,139,888.92x = 362,866,419,129,090.06
  5. Step 5: Solve for x
    x = 362,866,419,129,090.06/21,139,888.92
  6. Step 6: Final answer
    x = 17,165,010.68

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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.