Home / 15,006.25-20,708.63-8,382.25

Finding the Fourth Proportional to 15,006.25, 20,708.63 and 8,382.25

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Solution

The fourth proportional to 15,006.25, 20,708.63 and 8,382.25 is: 11,567.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,006.25 : 20,708.63 = 8,382.25 : x
  2. Step 2: Convert to fraction form
    15,006.25/20,708.63 = 8,382.25/x
  3. Step 3: Cross multiply
    15,006.25x = 20,708.63 × 8,382.25
  4. Step 4: Simplify right side
    15,006.25x = 173,584,913.82
  5. Step 5: Solve for x
    x = 173,584,913.82/15,006.25
  6. Step 6: Final answer
    x = 11,567.51

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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.