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Finding the Fourth Proportional to 15,101.34, 20,836.48 and 9,132.88

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Solution

The fourth proportional to 15,101.34, 20,836.48 and 9,132.88 is: 12,601.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.34 : 20,836.48 = 9,132.88 : x
  2. Step 2: Convert to fraction form
    15,101.34/20,836.48 = 9,132.88/x
  3. Step 3: Cross multiply
    15,101.34x = 20,836.48 × 9,132.88
  4. Step 4: Simplify right side
    15,101.34x = 190,297,071.46
  5. Step 5: Solve for x
    x = 190,297,071.46/15,101.34
  6. Step 6: Final answer
    x = 12,601.34

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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.