Home / 18,750.28-28,134.62-11,728.52

Finding the Fourth Proportional to 18,750.28, 28,134.62 and 11,728.52

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Solution

The fourth proportional to 18,750.28, 28,134.62 and 11,728.52 is: 17,598.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.28 : 28,134.62 = 11,728.52 : x
  2. Step 2: Convert to fraction form
    18,750.28/28,134.62 = 11,728.52/x
  3. Step 3: Cross multiply
    18,750.28x = 28,134.62 × 11,728.52
  4. Step 4: Simplify right side
    18,750.28x = 329,977,453.36
  5. Step 5: Solve for x
    x = 329,977,453.36/18,750.28
  6. Step 6: Final answer
    x = 17,598.53

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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.