Home / 38,931-53,724.78-21,267

Finding the Fourth Proportional to 38,931, 53,724.78 and 21,267

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Solution

The fourth proportional to 38,931, 53,724.78 and 21,267 is: 29,348.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,931 : 53,724.78 = 21,267 : x
  2. Step 2: Convert to fraction form
    38,931/53,724.78 = 21,267/x
  3. Step 3: Cross multiply
    38,931x = 53,724.78 × 21,267
  4. Step 4: Simplify right side
    38,931x = 1,142,564,896.26
  5. Step 5: Solve for x
    x = 1,142,564,896.26/38,931
  6. Step 6: Final answer
    x = 29,348.46

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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.