Home / 12,085.28-18,135.60-5,159.84

Finding the Fourth Proportional to 12,085.28, 18,135.60 and 5,159.84

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Solution

The fourth proportional to 12,085.28, 18,135.60 and 5,159.84 is: 7,743.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.28 : 18,135.60 = 5,159.84 : x
  2. Step 2: Convert to fraction form
    12,085.28/18,135.60 = 5,159.84/x
  3. Step 3: Cross multiply
    12,085.28x = 18,135.60 × 5,159.84
  4. Step 4: Simplify right side
    12,085.28x = 93,576,794.30
  5. Step 5: Solve for x
    x = 93,576,794.30/12,085.28
  6. Step 6: Final answer
    x = 7,743.04

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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.