Home / 20,181.60-30,272.40-10,340.10

Finding the Fourth Proportional to 20,181.60, 30,272.40 and 10,340.10

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Solution

The fourth proportional to 20,181.60, 30,272.40 and 10,340.10 is: 15,510.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.60 : 30,272.40 = 10,340.10 : x
  2. Step 2: Convert to fraction form
    20,181.60/30,272.40 = 10,340.10/x
  3. Step 3: Cross multiply
    20,181.60x = 30,272.40 × 10,340.10
  4. Step 4: Simplify right side
    20,181.60x = 313,019,643.24
  5. Step 5: Solve for x
    x = 313,019,643.24/20,181.60
  6. Step 6: Final answer
    x = 15,510.15

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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.