Home / 10,084.80-15,130.28-5,157.90

Finding the Fourth Proportional to 10,084.80, 15,130.28 and 5,157.90

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Solution

The fourth proportional to 10,084.80, 15,130.28 and 5,157.90 is: 7,738.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,084.80 : 15,130.28 = 5,157.90 : x
  2. Step 2: Convert to fraction form
    10,084.80/15,130.28 = 5,157.90/x
  3. Step 3: Cross multiply
    10,084.80x = 15,130.28 × 5,157.90
  4. Step 4: Simplify right side
    10,084.80x = 78,040,471.21
  5. Step 5: Solve for x
    x = 78,040,471.21/10,084.80
  6. Step 6: Final answer
    x = 7,738.43

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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.