Home / 13,699.62-20,561.08-5,385.46

Finding the Fourth Proportional to 13,699.62, 20,561.08 and 5,385.46

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Solution

The fourth proportional to 13,699.62, 20,561.08 and 5,385.46 is: 8,082.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.62 : 20,561.08 = 5,385.46 : x
  2. Step 2: Convert to fraction form
    13,699.62/20,561.08 = 5,385.46/x
  3. Step 3: Cross multiply
    13,699.62x = 20,561.08 × 5,385.46
  4. Step 4: Simplify right side
    13,699.62x = 110,730,873.90
  5. Step 5: Solve for x
    x = 110,730,873.90/13,699.62
  6. Step 6: Final answer
    x = 8,082.77

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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.