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Finding the Fourth Proportional to 14,447.57, 19,938.02 and 8,479.49

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Solution

The fourth proportional to 14,447.57, 19,938.02 and 8,479.49 is: 11,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,447.57 : 19,938.02 = 8,479.49 : x
  2. Step 2: Convert to fraction form
    14,447.57/19,938.02 = 8,479.49/x
  3. Step 3: Cross multiply
    14,447.57x = 19,938.02 × 8,479.49
  4. Step 4: Simplify right side
    14,447.57x = 169,064,099.12
  5. Step 5: Solve for x
    x = 169,064,099.12/14,447.57
  6. Step 6: Final answer
    x = 11,701.91

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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.