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Finding the Fourth Proportional to 15,165.93, 20,928.48 and 8,792.64

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Solution

The fourth proportional to 15,165.93, 20,928.48 and 8,792.64 is: 12,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,165.93 : 20,928.48 = 8,792.64 : x
  2. Step 2: Convert to fraction form
    15,165.93/20,928.48 = 8,792.64/x
  3. Step 3: Cross multiply
    15,165.93x = 20,928.48 × 8,792.64
  4. Step 4: Simplify right side
    15,165.93x = 184,016,590.39
  5. Step 5: Solve for x
    x = 184,016,590.39/15,165.93
  6. Step 6: Final answer
    x = 12,133.55

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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.