Home / 38,990.82-53,807.19-21,085.74

Finding the Fourth Proportional to 38,990.82, 53,807.19 and 21,085.74

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Solution

The fourth proportional to 38,990.82, 53,807.19 and 21,085.74 is: 29,098.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.82 : 53,807.19 = 21,085.74 : x
  2. Step 2: Convert to fraction form
    38,990.82/53,807.19 = 21,085.74/x
  3. Step 3: Cross multiply
    38,990.82x = 53,807.19 × 21,085.74
  4. Step 4: Simplify right side
    38,990.82x = 1,134,564,418.47
  5. Step 5: Solve for x
    x = 1,134,564,418.47/38,990.82
  6. Step 6: Final answer
    x = 29,098.24

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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.