Home / 18,721.18-25,840.94-11,553.28

Finding the Fourth Proportional to 18,721.18, 25,840.94 and 11,553.28

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Solution

The fourth proportional to 18,721.18, 25,840.94 and 11,553.28 is: 15,947.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.18 : 25,840.94 = 11,553.28 : x
  2. Step 2: Convert to fraction form
    18,721.18/25,840.94 = 11,553.28/x
  3. Step 3: Cross multiply
    18,721.18x = 25,840.94 × 11,553.28
  4. Step 4: Simplify right side
    18,721.18x = 298,547,615.28
  5. Step 5: Solve for x
    x = 298,547,615.28/18,721.18
  6. Step 6: Final answer
    x = 15,947.05

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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.