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Finding the Fourth Proportional to 18,356.39, 25,329.39 and 11,630.15

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Solution

The fourth proportional to 18,356.39, 25,329.39 and 11,630.15 is: 16,048.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.39 : 25,329.39 = 11,630.15 : x
  2. Step 2: Convert to fraction form
    18,356.39/25,329.39 = 11,630.15/x
  3. Step 3: Cross multiply
    18,356.39x = 25,329.39 × 11,630.15
  4. Step 4: Simplify right side
    18,356.39x = 294,584,478.46
  5. Step 5: Solve for x
    x = 294,584,478.46/18,356.39
  6. Step 6: Final answer
    x = 16,048.07

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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.