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Finding the Fourth Proportional to 25,447.53, 38,170.89 and 7,918.32

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Solution

The fourth proportional to 25,447.53, 38,170.89 and 7,918.32 is: 11,877.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,447.53 : 38,170.89 = 7,918.32 : x
  2. Step 2: Convert to fraction form
    25,447.53/38,170.89 = 7,918.32/x
  3. Step 3: Cross multiply
    25,447.53x = 38,170.89 × 7,918.32
  4. Step 4: Simplify right side
    25,447.53x = 302,249,321.70
  5. Step 5: Solve for x
    x = 302,249,321.70/25,447.53
  6. Step 6: Final answer
    x = 11,877.35

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1.5x scale

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.