Home / 13,534.20-18,665.10-8,498.90

Finding the Fourth Proportional to 13,534.20, 18,665.10 and 8,498.90

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Solution

The fourth proportional to 13,534.20, 18,665.10 and 8,498.90 is: 11,720.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,534.20 : 18,665.10 = 8,498.90 : x
  2. Step 2: Convert to fraction form
    13,534.20/18,665.10 = 8,498.90/x
  3. Step 3: Cross multiply
    13,534.20x = 18,665.10 × 8,498.90
  4. Step 4: Simplify right side
    13,534.20x = 158,632,865.05
  5. Step 5: Solve for x
    x = 158,632,865.05/13,534.20
  6. Step 6: Final answer
    x = 11,720.89

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1.5x scale

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.