Home / 15,080.38-20,807.75-9,110.88

Finding the Fourth Proportional to 15,080.38, 20,807.75 and 9,110.88

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Solution

The fourth proportional to 15,080.38, 20,807.75 and 9,110.88 is: 12,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.38 : 20,807.75 = 9,110.88 : x
  2. Step 2: Convert to fraction form
    15,080.38/20,807.75 = 9,110.88/x
  3. Step 3: Cross multiply
    15,080.38x = 20,807.75 × 9,110.88
  4. Step 4: Simplify right side
    15,080.38x = 189,576,936.10
  5. Step 5: Solve for x
    x = 189,576,936.10/15,080.38
  6. Step 6: Final answer
    x = 12,571.10

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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.