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Finding the Fourth Proportional to 18,450.61, 25,456.07 and 10,899.61

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Solution

The fourth proportional to 18,450.61, 25,456.07 and 10,899.61 is: 15,038.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,450.61 : 25,456.07 = 10,899.61 : x
  2. Step 2: Convert to fraction form
    18,450.61/25,456.07 = 10,899.61/x
  3. Step 3: Cross multiply
    18,450.61x = 25,456.07 × 10,899.61
  4. Step 4: Simplify right side
    18,450.61x = 277,461,341.93
  5. Step 5: Solve for x
    x = 277,461,341.93/18,450.61
  6. Step 6: Final answer
    x = 15,038.06

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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.