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Finding the Fourth Proportional to 15,165.43, 20,928.50 and 8,792.48

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Solution

The fourth proportional to 15,165.43, 20,928.50 and 8,792.48 is: 12,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.43 : 20,928.50 = 8,792.48 : x
  2. Step 2: Convert to fraction form
    15,165.43/20,928.50 = 8,792.48/x
  3. Step 3: Cross multiply
    15,165.43x = 20,928.50 × 8,792.48
  4. Step 4: Simplify right side
    15,165.43x = 184,013,459.01
  5. Step 5: Solve for x
    x = 184,013,459.01/15,165.43
  6. Step 6: Final answer
    x = 12,133.75

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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.