Home / 39,634.95-54,695.61-21,730.11

Finding the Fourth Proportional to 39,634.95, 54,695.61 and 21,730.11

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Solution

The fourth proportional to 39,634.95, 54,695.61 and 21,730.11 is: 29,987.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,634.95 : 54,695.61 = 21,730.11 : x
  2. Step 2: Convert to fraction form
    39,634.95/54,695.61 = 21,730.11/x
  3. Step 3: Cross multiply
    39,634.95x = 54,695.61 × 21,730.11
  4. Step 4: Simplify right side
    39,634.95x = 1,188,541,621.82
  5. Step 5: Solve for x
    x = 1,188,541,621.82/39,634.95
  6. Step 6: Final answer
    x = 29,987.21

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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.