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Finding the Fourth Proportional to 15,307.92, 22,939.97 and 8,720.49

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Solution

The fourth proportional to 15,307.92, 22,939.97 and 8,720.49 is: 13,068.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.92 : 22,939.97 = 8,720.49 : x
  2. Step 2: Convert to fraction form
    15,307.92/22,939.97 = 8,720.49/x
  3. Step 3: Cross multiply
    15,307.92x = 22,939.97 × 8,720.49
  4. Step 4: Simplify right side
    15,307.92x = 200,047,778.99
  5. Step 5: Solve for x
    x = 200,047,778.99/15,307.92
  6. Step 6: Final answer
    x = 13,068.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.