Home / 27,805.78-38,372.94-15,230.53

Finding the Fourth Proportional to 27,805.78, 38,372.94 and 15,230.53

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Solution

The fourth proportional to 27,805.78, 38,372.94 and 15,230.53 is: 21,018.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,805.78 : 38,372.94 = 15,230.53 : x
  2. Step 2: Convert to fraction form
    27,805.78/38,372.94 = 15,230.53/x
  3. Step 3: Cross multiply
    27,805.78x = 38,372.94 × 15,230.53
  4. Step 4: Simplify right side
    27,805.78x = 584,440,261.82
  5. Step 5: Solve for x
    x = 584,440,261.82/27,805.78
  6. Step 6: Final answer
    x = 21,018.66

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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.