Home / 15,094.28-20,825.78-9,121.62

Finding the Fourth Proportional to 15,094.28, 20,825.78 and 9,121.62

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Solution

The fourth proportional to 15,094.28, 20,825.78 and 9,121.62 is: 12,585.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,094.28 : 20,825.78 = 9,121.62 : x
  2. Step 2: Convert to fraction form
    15,094.28/20,825.78 = 9,121.62/x
  3. Step 3: Cross multiply
    15,094.28x = 20,825.78 × 9,121.62
  4. Step 4: Simplify right side
    15,094.28x = 189,964,851.36
  5. Step 5: Solve for x
    x = 189,964,851.36/15,094.28
  6. Step 6: Final answer
    x = 12,585.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.