Home / 39,026.10-53,856.17-21,121.11

Finding the Fourth Proportional to 39,026.10, 53,856.17 and 21,121.11

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Solution

The fourth proportional to 39,026.10, 53,856.17 and 21,121.11 is: 29,147.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,026.10 : 53,856.17 = 21,121.11 : x
  2. Step 2: Convert to fraction form
    39,026.10/53,856.17 = 21,121.11/x
  3. Step 3: Cross multiply
    39,026.10x = 53,856.17 × 21,121.11
  4. Step 4: Simplify right side
    39,026.10x = 1,137,501,985.14
  5. Step 5: Solve for x
    x = 1,137,501,985.14/39,026.10
  6. Step 6: Final answer
    x = 29,147.21

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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.