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Finding the Fourth Proportional to 27,805.79, 38,372.00 and 15,230.54

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Solution

The fourth proportional to 27,805.79, 38,372.00 and 15,230.54 is: 21,018.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,805.79 : 38,372.00 = 15,230.54 : x
  2. Step 2: Convert to fraction form
    27,805.79/38,372.00 = 15,230.54/x
  3. Step 3: Cross multiply
    27,805.79x = 38,372.00 × 15,230.54
  4. Step 4: Simplify right side
    27,805.79x = 584,426,300.66
  5. Step 5: Solve for x
    x = 584,426,300.66/27,805.79
  6. Step 6: Final answer
    x = 21,018.15

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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.