Home / 38,724.39-53,436.54-21,726.30

Finding the Fourth Proportional to 38,724.39, 53,436.54 and 21,726.30

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Solution

The fourth proportional to 38,724.39, 53,436.54 and 21,726.30 is: 29,980.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,724.39 : 53,436.54 = 21,726.30 : x
  2. Step 2: Convert to fraction form
    38,724.39/53,436.54 = 21,726.30/x
  3. Step 3: Cross multiply
    38,724.39x = 53,436.54 × 21,726.30
  4. Step 4: Simplify right side
    38,724.39x = 1,160,978,299.00
  5. Step 5: Solve for x
    x = 1,160,978,299.00/38,724.39
  6. Step 6: Final answer
    x = 29,980.54

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1.5x scale

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.