Home / 27,805.47-38,374.30-15,870.59

Finding the Fourth Proportional to 27,805.47, 38,374.30 and 15,870.59

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Solution

The fourth proportional to 27,805.47, 38,374.30 and 15,870.59 is: 21,902.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,805.47 : 38,374.30 = 15,870.59 : x
  2. Step 2: Convert to fraction form
    27,805.47/38,374.30 = 15,870.59/x
  3. Step 3: Cross multiply
    27,805.47x = 38,374.30 × 15,870.59
  4. Step 4: Simplify right side
    27,805.47x = 609,022,781.84
  5. Step 5: Solve for x
    x = 609,022,781.84/27,805.47
  6. Step 6: Final answer
    x = 21,902.98

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Half scale
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Double scale
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Similar ratio
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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.