Home / 20,114.16-30,182.40-10,255.20

Finding the Fourth Proportional to 20,114.16, 30,182.40 and 10,255.20

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Solution

The fourth proportional to 20,114.16, 30,182.40 and 10,255.20 is: 15,388.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.16 : 30,182.40 = 10,255.20 : x
  2. Step 2: Convert to fraction form
    20,114.16/30,182.40 = 10,255.20/x
  3. Step 3: Cross multiply
    20,114.16x = 30,182.40 × 10,255.20
  4. Step 4: Simplify right side
    20,114.16x = 309,526,548.48
  5. Step 5: Solve for x
    x = 309,526,548.48/20,114.16
  6. Step 6: Final answer
    x = 15,388.49

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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.