Home / 21,139,889.92-29,172,551.90-12,438,626.10

Finding the Fourth Proportional to 21,139,889.92, 29,172,551.90 and 12,438,626.10

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Solution

The fourth proportional to 21,139,889.92, 29,172,551.90 and 12,438,626.10 is: 17,165,012.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139,889.92 : 29,172,551.90 = 12,438,626.10 : x
  2. Step 2: Convert to fraction form
    21,139,889.92/29,172,551.90 = 12,438,626.10/x
  3. Step 3: Cross multiply
    21,139,889.92x = 29,172,551.90 × 12,438,626.10
  4. Step 4: Simplify right side
    21,139,889.92x = 362,866,465,466,944.56
  5. Step 5: Solve for x
    x = 362,866,465,466,944.56/21,139,889.92
  6. Step 6: Final answer
    x = 17,165,012.06

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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.