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Finding the Fourth Proportional to 21,579.01, 32,368.61 and 7,538.97

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Solution

The fourth proportional to 21,579.01, 32,368.61 and 7,538.97 is: 11,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.01 : 32,368.61 = 7,538.97 : x
  2. Step 2: Convert to fraction form
    21,579.01/32,368.61 = 7,538.97/x
  3. Step 3: Cross multiply
    21,579.01x = 32,368.61 × 7,538.97
  4. Step 4: Simplify right side
    21,579.01x = 244,026,119.96
  5. Step 5: Solve for x
    x = 244,026,119.96/21,579.01
  6. Step 6: Final answer
    x = 11,308.50

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.