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Finding the Fourth Proportional to 15,047.58, 20,753.04 and 11,279.58

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Solution

The fourth proportional to 15,047.58, 20,753.04 and 11,279.58 is: 15,556.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047.58 : 20,753.04 = 11,279.58 : x
  2. Step 2: Convert to fraction form
    15,047.58/20,753.04 = 11,279.58/x
  3. Step 3: Cross multiply
    15,047.58x = 20,753.04 × 11,279.58
  4. Step 4: Simplify right side
    15,047.58x = 234,085,574.92
  5. Step 5: Solve for x
    x = 234,085,574.92/15,047.58
  6. Step 6: Final answer
    x = 15,556.36

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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.