Home / 18,220.62-25,143.04-10,665.89

Finding the Fourth Proportional to 18,220.62, 25,143.04 and 10,665.89

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Solution

The fourth proportional to 18,220.62, 25,143.04 and 10,665.89 is: 14,718.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.62 : 25,143.04 = 10,665.89 : x
  2. Step 2: Convert to fraction form
    18,220.62/25,143.04 = 10,665.89/x
  3. Step 3: Cross multiply
    18,220.62x = 25,143.04 × 10,665.89
  4. Step 4: Simplify right side
    18,220.62x = 268,172,898.91
  5. Step 5: Solve for x
    x = 268,172,898.91/18,220.62
  6. Step 6: Final answer
    x = 14,718.10

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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.