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Finding the Fourth Proportional to 15,164.81, 20,927.48 and 8,792.65

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Solution

The fourth proportional to 15,164.81, 20,927.48 and 8,792.65 is: 12,133.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,164.81 : 20,927.48 = 8,792.65 : x
  2. Step 2: Convert to fraction form
    15,164.81/20,927.48 = 8,792.65/x
  3. Step 3: Cross multiply
    15,164.81x = 20,927.48 × 8,792.65
  4. Step 4: Simplify right side
    15,164.81x = 184,008,007.02
  5. Step 5: Solve for x
    x = 184,008,007.02/15,164.81
  6. Step 6: Final answer
    x = 12,133.88

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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.