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Finding the Fourth Proportional to 18,344.66, 25,310.49 and 10,386.71

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Solution

The fourth proportional to 18,344.66, 25,310.49 and 10,386.71 is: 14,330.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,344.66 : 25,310.49 = 10,386.71 : x
  2. Step 2: Convert to fraction form
    18,344.66/25,310.49 = 10,386.71/x
  3. Step 3: Cross multiply
    18,344.66x = 25,310.49 × 10,386.71
  4. Step 4: Simplify right side
    18,344.66x = 262,892,719.59
  5. Step 5: Solve for x
    x = 262,892,719.59/18,344.66
  6. Step 6: Final answer
    x = 14,330.75

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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.