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Finding the Fourth Proportional to 18,377.66, 25,368.92 and 12,417.39

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Solution

The fourth proportional to 18,377.66, 25,368.92 and 12,417.39 is: 17,141.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,377.66 : 25,368.92 = 12,417.39 : x
  2. Step 2: Convert to fraction form
    18,377.66/25,368.92 = 12,417.39/x
  3. Step 3: Cross multiply
    18,377.66x = 25,368.92 × 12,417.39
  4. Step 4: Simplify right side
    18,377.66x = 315,015,773.52
  5. Step 5: Solve for x
    x = 315,015,773.52/18,377.66
  6. Step 6: Final answer
    x = 17,141.23

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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.