Home / 20,513.30-30,748.42-11,617.50

Finding the Fourth Proportional to 20,513.30, 30,748.42 and 11,617.50

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Solution

The fourth proportional to 20,513.30, 30,748.42 and 11,617.50 is: 17,414.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.30 : 30,748.42 = 11,617.50 : x
  2. Step 2: Convert to fraction form
    20,513.30/30,748.42 = 11,617.50/x
  3. Step 3: Cross multiply
    20,513.30x = 30,748.42 × 11,617.50
  4. Step 4: Simplify right side
    20,513.30x = 357,219,769.35
  5. Step 5: Solve for x
    x = 357,219,769.35/20,513.30
  6. Step 6: Final answer
    x = 17,414.06

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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.