Home / 10,515.68-15,773.44-3,120.16

Finding the Fourth Proportional to 10,515.68, 15,773.44 and 3,120.16

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Solution

The fourth proportional to 10,515.68, 15,773.44 and 3,120.16 is: 4,680.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.68 : 15,773.44 = 3,120.16 : x
  2. Step 2: Convert to fraction form
    10,515.68/15,773.44 = 3,120.16/x
  3. Step 3: Cross multiply
    10,515.68x = 15,773.44 × 3,120.16
  4. Step 4: Simplify right side
    10,515.68x = 49,215,656.55
  5. Step 5: Solve for x
    x = 49,215,656.55/10,515.68
  6. Step 6: Final answer
    x = 4,680.22

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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.