Home / 10,189.60-15,276.16-3,612.20

Finding the Fourth Proportional to 10,189.60, 15,276.16 and 3,612.20

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Solution

The fourth proportional to 10,189.60, 15,276.16 and 3,612.20 is: 5,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,189.60 : 15,276.16 = 3,612.20 : x
  2. Step 2: Convert to fraction form
    10,189.60/15,276.16 = 3,612.20/x
  3. Step 3: Cross multiply
    10,189.60x = 15,276.16 × 3,612.20
  4. Step 4: Simplify right side
    10,189.60x = 55,180,545.15
  5. Step 5: Solve for x
    x = 55,180,545.15/10,189.60
  6. Step 6: Final answer
    x = 5,415.38

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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.