Home / 38,722.76-53,436.51-21,726.63

Finding the Fourth Proportional to 38,722.76, 53,436.51 and 21,726.63

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Solution

The fourth proportional to 38,722.76, 53,436.51 and 21,726.63 is: 29,982.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,722.76 : 53,436.51 = 21,726.63 : x
  2. Step 2: Convert to fraction form
    38,722.76/53,436.51 = 21,726.63/x
  3. Step 3: Cross multiply
    38,722.76x = 53,436.51 × 21,726.63
  4. Step 4: Simplify right side
    38,722.76x = 1,160,995,281.26
  5. Step 5: Solve for x
    x = 1,160,995,281.26/38,722.76
  6. Step 6: Final answer
    x = 29,982.25

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Half scale
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Double scale
Find fourth proportional to 38,723.76, 53,437.89 and 21,727.63
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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.