Home / 20,208.30-30,312.45-17,000.70

Finding the Fourth Proportional to 20,208.30, 30,312.45 and 17,000.70

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Solution

The fourth proportional to 20,208.30, 30,312.45 and 17,000.70 is: 25,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.30 : 30,312.45 = 17,000.70 : x
  2. Step 2: Convert to fraction form
    20,208.30/30,312.45 = 17,000.70/x
  3. Step 3: Cross multiply
    20,208.30x = 30,312.45 × 17,000.70
  4. Step 4: Simplify right side
    20,208.30x = 515,332,868.72
  5. Step 5: Solve for x
    x = 515,332,868.72/20,208.30
  6. Step 6: Final answer
    x = 25,501.05

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.