Home / 13,553.11-20,340.60-7,320.16

Finding the Fourth Proportional to 13,553.11, 20,340.60 and 7,320.16

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Solution

The fourth proportional to 13,553.11, 20,340.60 and 7,320.16 is: 10,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.11 : 20,340.60 = 7,320.16 : x
  2. Step 2: Convert to fraction form
    13,553.11/20,340.60 = 7,320.16/x
  3. Step 3: Cross multiply
    13,553.11x = 20,340.60 × 7,320.16
  4. Step 4: Simplify right side
    13,553.11x = 148,896,446.50
  5. Step 5: Solve for x
    x = 148,896,446.50/13,553.11
  6. Step 6: Final answer
    x = 10,986.15

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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.