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Finding the Fourth Proportional to 14,487.75, 19,993.10 and 7,863.75

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Solution

The fourth proportional to 14,487.75, 19,993.10 and 7,863.75 is: 10,851.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,487.75 : 19,993.10 = 7,863.75 : x
  2. Step 2: Convert to fraction form
    14,487.75/19,993.10 = 7,863.75/x
  3. Step 3: Cross multiply
    14,487.75x = 19,993.10 × 7,863.75
  4. Step 4: Simplify right side
    14,487.75x = 157,220,700.81
  5. Step 5: Solve for x
    x = 157,220,700.81/14,487.75
  6. Step 6: Final answer
    x = 10,851.98

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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.