Home / 15,418.56-21,272.38-10,038.54

Finding the Fourth Proportional to 15,418.56, 21,272.38 and 10,038.54

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Solution

The fourth proportional to 15,418.56, 21,272.38 and 10,038.54 is: 13,849.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.56 : 21,272.38 = 10,038.54 : x
  2. Step 2: Convert to fraction form
    15,418.56/21,272.38 = 10,038.54/x
  3. Step 3: Cross multiply
    15,418.56x = 21,272.38 × 10,038.54
  4. Step 4: Simplify right side
    15,418.56x = 213,543,637.53
  5. Step 5: Solve for x
    x = 213,543,637.53/15,418.56
  6. Step 6: Final answer
    x = 13,849.78

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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.