Home / 15,382.56-21,224.20-8,668.20

Finding the Fourth Proportional to 15,382.56, 21,224.20 and 8,668.20

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Solution

The fourth proportional to 15,382.56, 21,224.20 and 8,668.20 is: 11,960.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.56 : 21,224.20 = 8,668.20 : x
  2. Step 2: Convert to fraction form
    15,382.56/21,224.20 = 8,668.20/x
  3. Step 3: Cross multiply
    15,382.56x = 21,224.20 × 8,668.20
  4. Step 4: Simplify right side
    15,382.56x = 183,975,567.10
  5. Step 5: Solve for x
    x = 183,975,567.10/15,382.56
  6. Step 6: Final answer
    x = 11,960.01

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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.