Home / 18,218.35-25,141.49-11,045.90

Finding the Fourth Proportional to 18,218.35, 25,141.49 and 11,045.90

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Solution

The fourth proportional to 18,218.35, 25,141.49 and 11,045.90 is: 15,243.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.35 : 25,141.49 = 11,045.90 : x
  2. Step 2: Convert to fraction form
    18,218.35/25,141.49 = 11,045.90/x
  3. Step 3: Cross multiply
    18,218.35x = 25,141.49 × 11,045.90
  4. Step 4: Simplify right side
    18,218.35x = 277,710,392.02
  5. Step 5: Solve for x
    x = 277,710,392.02/18,218.35
  6. Step 6: Final answer
    x = 15,243.45

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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.