Home / 30,979.40-42,750.18-17,549.87

Finding the Fourth Proportional to 30,979.40, 42,750.18 and 17,549.87

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Solution

The fourth proportional to 30,979.40, 42,750.18 and 17,549.87 is: 24,218.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.40 : 42,750.18 = 17,549.87 : x
  2. Step 2: Convert to fraction form
    30,979.40/42,750.18 = 17,549.87/x
  3. Step 3: Cross multiply
    30,979.40x = 42,750.18 × 17,549.87
  4. Step 4: Simplify right side
    30,979.40x = 750,259,887.73
  5. Step 5: Solve for x
    x = 750,259,887.73/30,979.40
  6. Step 6: Final answer
    x = 24,218.03

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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.