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Finding the Fourth Proportional to 14,447.54, 19,939.02 and 8,781.80

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Solution

The fourth proportional to 14,447.54, 19,939.02 and 8,781.80 is: 12,119.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,447.54 : 19,939.02 = 8,781.80 : x
  2. Step 2: Convert to fraction form
    14,447.54/19,939.02 = 8,781.80/x
  3. Step 3: Cross multiply
    14,447.54x = 19,939.02 × 8,781.80
  4. Step 4: Simplify right side
    14,447.54x = 175,100,386.14
  5. Step 5: Solve for x
    x = 175,100,386.14/14,447.54
  6. Step 6: Final answer
    x = 12,119.74

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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.