Home / 12,659.28-18,981-4,858.80

Finding the Fourth Proportional to 12,659.28, 18,981 and 4,858.80

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Solution

The fourth proportional to 12,659.28, 18,981 and 4,858.80 is: 7,285.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.28 : 18,981 = 4,858.80 : x
  2. Step 2: Convert to fraction form
    12,659.28/18,981 = 4,858.80/x
  3. Step 3: Cross multiply
    12,659.28x = 18,981 × 4,858.80
  4. Step 4: Simplify right side
    12,659.28x = 92,224,882.80
  5. Step 5: Solve for x
    x = 92,224,882.80/12,659.28
  6. Step 6: Final answer
    x = 7,285.16

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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.