Home / 20,671.30-30,920.16-17,422.45

Finding the Fourth Proportional to 20,671.30, 30,920.16 and 17,422.45

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Solution

The fourth proportional to 20,671.30, 30,920.16 and 17,422.45 is: 26,060.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.30 : 30,920.16 = 17,422.45 : x
  2. Step 2: Convert to fraction form
    20,671.30/30,920.16 = 17,422.45/x
  3. Step 3: Cross multiply
    20,671.30x = 30,920.16 × 17,422.45
  4. Step 4: Simplify right side
    20,671.30x = 538,705,000.03
  5. Step 5: Solve for x
    x = 538,705,000.03/20,671.30
  6. Step 6: Final answer
    x = 26,060.53

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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.