Home / 15,456.39-21,329.87-8,382.93

Finding the Fourth Proportional to 15,456.39, 21,329.87 and 8,382.93

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Solution

The fourth proportional to 15,456.39, 21,329.87 and 8,382.93 is: 11,568.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.39 : 21,329.87 = 8,382.93 : x
  2. Step 2: Convert to fraction form
    15,456.39/21,329.87 = 8,382.93/x
  3. Step 3: Cross multiply
    15,456.39x = 21,329.87 × 8,382.93
  4. Step 4: Simplify right side
    15,456.39x = 178,806,807.12
  5. Step 5: Solve for x
    x = 178,806,807.12/15,456.39
  6. Step 6: Final answer
    x = 11,568.47

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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.