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Finding the Fourth Proportional to 15,173.92, 20,938.32 and 9,207.04

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Solution

The fourth proportional to 15,173.92, 20,938.32 and 9,207.04 is: 12,704.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,173.92 : 20,938.32 = 9,207.04 : x
  2. Step 2: Convert to fraction form
    15,173.92/20,938.32 = 9,207.04/x
  3. Step 3: Cross multiply
    15,173.92x = 20,938.32 × 9,207.04
  4. Step 4: Simplify right side
    15,173.92x = 192,779,949.77
  5. Step 5: Solve for x
    x = 192,779,949.77/15,173.92
  6. Step 6: Final answer
    x = 12,704.69

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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.