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Finding the Fourth Proportional to 18,312.19, 27,431.88 and 8,924.83

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Solution

The fourth proportional to 18,312.19, 27,431.88 and 8,924.83 is: 13,369.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.19 : 27,431.88 = 8,924.83 : x
  2. Step 2: Convert to fraction form
    18,312.19/27,431.88 = 8,924.83/x
  3. Step 3: Cross multiply
    18,312.19x = 27,431.88 × 8,924.83
  4. Step 4: Simplify right side
    18,312.19x = 244,824,728.42
  5. Step 5: Solve for x
    x = 244,824,728.42/18,312.19
  6. Step 6: Final answer
    x = 13,369.50

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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.