Home / 27,787.05-38,345.82-15,039.98

Finding the Fourth Proportional to 27,787.05, 38,345.82 and 15,039.98

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Solution

The fourth proportional to 27,787.05, 38,345.82 and 15,039.98 is: 20,755.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.05 : 38,345.82 = 15,039.98 : x
  2. Step 2: Convert to fraction form
    27,787.05/38,345.82 = 15,039.98/x
  3. Step 3: Cross multiply
    27,787.05x = 38,345.82 × 15,039.98
  4. Step 4: Simplify right side
    27,787.05x = 576,720,174.15
  5. Step 5: Solve for x
    x = 576,720,174.15/27,787.05
  6. Step 6: Final answer
    x = 20,755.00

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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.