Home / 20,143.70-30,215.55-17,897.30

Finding the Fourth Proportional to 20,143.70, 30,215.55 and 17,897.30

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Solution

The fourth proportional to 20,143.70, 30,215.55 and 17,897.30 is: 26,845.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.70 : 30,215.55 = 17,897.30 : x
  2. Step 2: Convert to fraction form
    20,143.70/30,215.55 = 17,897.30/x
  3. Step 3: Cross multiply
    20,143.70x = 30,215.55 × 17,897.30
  4. Step 4: Simplify right side
    20,143.70x = 540,776,763.02
  5. Step 5: Solve for x
    x = 540,776,763.02/20,143.70
  6. Step 6: Final answer
    x = 26,845.95

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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.