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Finding the Fourth Proportional to 14,247.48, 19,659.78 and 7,959

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Solution

The fourth proportional to 14,247.48, 19,659.78 and 7,959 is: 10,982.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,247.48 : 19,659.78 = 7,959 : x
  2. Step 2: Convert to fraction form
    14,247.48/19,659.78 = 7,959/x
  3. Step 3: Cross multiply
    14,247.48x = 19,659.78 × 7,959
  4. Step 4: Simplify right side
    14,247.48x = 156,472,189.02
  5. Step 5: Solve for x
    x = 156,472,189.02/14,247.48
  6. Step 6: Final answer
    x = 10,982.45

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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.