Home / 15,865.97-21,895.04-8,696.17

Finding the Fourth Proportional to 15,865.97, 21,895.04 and 8,696.17

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Solution

The fourth proportional to 15,865.97, 21,895.04 and 8,696.17 is: 12,000.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.97 : 21,895.04 = 8,696.17 : x
  2. Step 2: Convert to fraction form
    15,865.97/21,895.04 = 8,696.17/x
  3. Step 3: Cross multiply
    15,865.97x = 21,895.04 × 8,696.17
  4. Step 4: Simplify right side
    15,865.97x = 190,402,837.04
  5. Step 5: Solve for x
    x = 190,402,837.04/15,865.97
  6. Step 6: Final answer
    x = 12,000.71

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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.