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Finding the Fourth Proportional to 15,048.48, 20,768.08 and 8,677.12

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Solution

The fourth proportional to 15,048.48, 20,768.08 and 8,677.12 is: 11,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.48 : 20,768.08 = 8,677.12 : x
  2. Step 2: Convert to fraction form
    15,048.48/20,768.08 = 8,677.12/x
  3. Step 3: Cross multiply
    15,048.48x = 20,768.08 × 8,677.12
  4. Step 4: Simplify right side
    15,048.48x = 180,207,122.33
  5. Step 5: Solve for x
    x = 180,207,122.33/15,048.48
  6. Step 6: Final answer
    x = 11,975.10

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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.