Home / 20,318.31-28,036.71-12,252.38

Finding the Fourth Proportional to 20,318.31, 28,036.71 and 12,252.38

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Solution

The fourth proportional to 20,318.31, 28,036.71 and 12,252.38 is: 16,906.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.31 : 28,036.71 = 12,252.38 : x
  2. Step 2: Convert to fraction form
    20,318.31/28,036.71 = 12,252.38/x
  3. Step 3: Cross multiply
    20,318.31x = 28,036.71 × 12,252.38
  4. Step 4: Simplify right side
    20,318.31x = 343,516,284.69
  5. Step 5: Solve for x
    x = 343,516,284.69/20,318.31
  6. Step 6: Final answer
    x = 16,906.74

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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.