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Finding the Fourth Proportional to 18,302.31, 25,277.95 and 12,323.60

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Solution

The fourth proportional to 18,302.31, 25,277.95 and 12,323.60 is: 17,020.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.31 : 25,277.95 = 12,323.60 : x
  2. Step 2: Convert to fraction form
    18,302.31/25,277.95 = 12,323.60/x
  3. Step 3: Cross multiply
    18,302.31x = 25,277.95 × 12,323.60
  4. Step 4: Simplify right side
    18,302.31x = 311,515,344.62
  5. Step 5: Solve for x
    x = 311,515,344.62/18,302.31
  6. Step 6: Final answer
    x = 17,020.55

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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.