Home / 15,506.97-21,399.76-9,218.13

Finding the Fourth Proportional to 15,506.97, 21,399.76 and 9,218.13

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Solution

The fourth proportional to 15,506.97, 21,399.76 and 9,218.13 is: 12,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.97 : 21,399.76 = 9,218.13 : x
  2. Step 2: Convert to fraction form
    15,506.97/21,399.76 = 9,218.13/x
  3. Step 3: Cross multiply
    15,506.97x = 21,399.76 × 9,218.13
  4. Step 4: Simplify right side
    15,506.97x = 197,265,769.65
  5. Step 5: Solve for x
    x = 197,265,769.65/15,506.97
  6. Step 6: Final answer
    x = 12,721.10

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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.