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Finding the Fourth Proportional to 15,101.65, 20,836.91 and 9,133.20

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Solution

The fourth proportional to 15,101.65, 20,836.91 and 9,133.20 is: 12,601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.65 : 20,836.91 = 9,133.20 : x
  2. Step 2: Convert to fraction form
    15,101.65/20,836.91 = 9,133.20/x
  3. Step 3: Cross multiply
    15,101.65x = 20,836.91 × 9,133.20
  4. Step 4: Simplify right side
    15,101.65x = 190,307,689.25
  5. Step 5: Solve for x
    x = 190,307,689.25/15,101.65
  6. Step 6: Final answer
    x = 12,601.78

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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.