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Finding the Fourth Proportional to 18,822, 25,974.90 and 10,439.04

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Solution

The fourth proportional to 18,822, 25,974.90 and 10,439.04 is: 14,406.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822 : 25,974.90 = 10,439.04 : x
  2. Step 2: Convert to fraction form
    18,822/25,974.90 = 10,439.04/x
  3. Step 3: Cross multiply
    18,822x = 25,974.90 × 10,439.04
  4. Step 4: Simplify right side
    18,822x = 271,153,020.10
  5. Step 5: Solve for x
    x = 271,153,020.10/18,822
  6. Step 6: Final answer
    x = 14,406.17

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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.