Home / 28,011.73-38,602.98-20,040.12

Finding the Fourth Proportional to 28,011.73, 38,602.98 and 20,040.12

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Solution

The fourth proportional to 28,011.73, 38,602.98 and 20,040.12 is: 27,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.73 : 38,602.98 = 20,040.12 : x
  2. Step 2: Convert to fraction form
    28,011.73/38,602.98 = 20,040.12/x
  3. Step 3: Cross multiply
    28,011.73x = 38,602.98 × 20,040.12
  4. Step 4: Simplify right side
    28,011.73x = 773,608,351.56
  5. Step 5: Solve for x
    x = 773,608,351.56/28,011.73
  6. Step 6: Final answer
    x = 27,617.30

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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.