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Finding the Fourth Proportional to 38,630.25, 57,955.10 and 10,928.25

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Solution

The fourth proportional to 38,630.25, 57,955.10 and 10,928.25 is: 16,395.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,630.25 : 57,955.10 = 10,928.25 : x
  2. Step 2: Convert to fraction form
    38,630.25/57,955.10 = 10,928.25/x
  3. Step 3: Cross multiply
    38,630.25x = 57,955.10 × 10,928.25
  4. Step 4: Simplify right side
    38,630.25x = 633,347,766.93
  5. Step 5: Solve for x
    x = 633,347,766.93/38,630.25
  6. Step 6: Final answer
    x = 16,395.12

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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.