Home / 10,015.16-15,019.70-3,439.85

Finding the Fourth Proportional to 10,015.16, 15,019.70 and 3,439.85

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Solution

The fourth proportional to 10,015.16, 15,019.70 and 3,439.85 is: 5,158.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.16 : 15,019.70 = 3,439.85 : x
  2. Step 2: Convert to fraction form
    10,015.16/15,019.70 = 3,439.85/x
  3. Step 3: Cross multiply
    10,015.16x = 15,019.70 × 3,439.85
  4. Step 4: Simplify right side
    10,015.16x = 51,665,422.75
  5. Step 5: Solve for x
    x = 51,665,422.75/10,015.16
  6. Step 6: Final answer
    x = 5,158.72

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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.