Home / 15,891.17-21,930.71-9,605.57

Finding the Fourth Proportional to 15,891.17, 21,930.71 and 9,605.57

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Solution

The fourth proportional to 15,891.17, 21,930.71 and 9,605.57 is: 13,256.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.17 : 21,930.71 = 9,605.57 : x
  2. Step 2: Convert to fraction form
    15,891.17/21,930.71 = 9,605.57/x
  3. Step 3: Cross multiply
    15,891.17x = 21,930.71 × 9,605.57
  4. Step 4: Simplify right side
    15,891.17x = 210,656,812.37
  5. Step 5: Solve for x
    x = 210,656,812.37/15,891.17
  6. Step 6: Final answer
    x = 13,256.22

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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.