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Finding the Fourth Proportional to 28,995.30, 40,016.30 and 16,248.42

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Solution

The fourth proportional to 28,995.30, 40,016.30 and 16,248.42 is: 22,424.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.30 : 40,016.30 = 16,248.42 : x
  2. Step 2: Convert to fraction form
    28,995.30/40,016.30 = 16,248.42/x
  3. Step 3: Cross multiply
    28,995.30x = 40,016.30 × 16,248.42
  4. Step 4: Simplify right side
    28,995.30x = 650,201,568.00
  5. Step 5: Solve for x
    x = 650,201,568.00/28,995.30
  6. Step 6: Final answer
    x = 22,424.38

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Half scale
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Double scale
Find fourth proportional to 28,996.30, 40,017.68 and 16,249.42
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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.