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Finding the Fourth Proportional to 18,287.65, 25,239.01 and 10,330.39

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Solution

The fourth proportional to 18,287.65, 25,239.01 and 10,330.39 is: 14,257.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.65 : 25,239.01 = 10,330.39 : x
  2. Step 2: Convert to fraction form
    18,287.65/25,239.01 = 10,330.39/x
  3. Step 3: Cross multiply
    18,287.65x = 25,239.01 × 10,330.39
  4. Step 4: Simplify right side
    18,287.65x = 260,728,699.64
  5. Step 5: Solve for x
    x = 260,728,699.64/18,287.65
  6. Step 6: Final answer
    x = 14,257.09

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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.