Home / 13,750.28-18,972.09-8,084.73

Finding the Fourth Proportional to 13,750.28, 18,972.09 and 8,084.73

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Solution

The fourth proportional to 13,750.28, 18,972.09 and 8,084.73 is: 11,154.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.28 : 18,972.09 = 8,084.73 : x
  2. Step 2: Convert to fraction form
    13,750.28/18,972.09 = 8,084.73/x
  3. Step 3: Cross multiply
    13,750.28x = 18,972.09 × 8,084.73
  4. Step 4: Simplify right side
    13,750.28x = 153,384,225.19
  5. Step 5: Solve for x
    x = 153,384,225.19/13,750.28
  6. Step 6: Final answer
    x = 11,154.99

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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.