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Finding the Fourth Proportional to 15,176.16, 20,937.06 and 9,205.65

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Solution

The fourth proportional to 15,176.16, 20,937.06 and 9,205.65 is: 12,700.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,176.16 : 20,937.06 = 9,205.65 : x
  2. Step 2: Convert to fraction form
    15,176.16/20,937.06 = 9,205.65/x
  3. Step 3: Cross multiply
    15,176.16x = 20,937.06 × 9,205.65
  4. Step 4: Simplify right side
    15,176.16x = 192,739,246.39
  5. Step 5: Solve for x
    x = 192,739,246.39/15,176.16
  6. Step 6: Final answer
    x = 12,700.13

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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.