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Finding the Fourth Proportional to 15,104.11, 20,842.52 and 8,389.16

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Solution

The fourth proportional to 15,104.11, 20,842.52 and 8,389.16 is: 11,576.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104.11 : 20,842.52 = 8,389.16 : x
  2. Step 2: Convert to fraction form
    15,104.11/20,842.52 = 8,389.16/x
  3. Step 3: Cross multiply
    15,104.11x = 20,842.52 × 8,389.16
  4. Step 4: Simplify right side
    15,104.11x = 174,851,256.06
  5. Step 5: Solve for x
    x = 174,851,256.06/15,104.11
  6. Step 6: Final answer
    x = 11,576.41

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Double scale
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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.