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Finding the Fourth Proportional to 27,805.76, 38,372.51 and 15,230.51

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Solution

The fourth proportional to 27,805.76, 38,372.51 and 15,230.51 is: 21,018.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,805.76 : 38,372.51 = 15,230.51 : x
  2. Step 2: Convert to fraction form
    27,805.76/38,372.51 = 15,230.51/x
  3. Step 3: Cross multiply
    27,805.76x = 38,372.51 × 15,230.51
  4. Step 4: Simplify right side
    27,805.76x = 584,432,821.13
  5. Step 5: Solve for x
    x = 584,432,821.13/27,805.76
  6. Step 6: Final answer
    x = 21,018.41

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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.