Home / 27,787.98-38,347.14-15,040.90

Finding the Fourth Proportional to 27,787.98, 38,347.14 and 15,040.90

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Solution

The fourth proportional to 27,787.98, 38,347.14 and 15,040.90 is: 20,756.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.98 : 38,347.14 = 15,040.90 : x
  2. Step 2: Convert to fraction form
    27,787.98/38,347.14 = 15,040.90/x
  3. Step 3: Cross multiply
    27,787.98x = 38,347.14 × 15,040.90
  4. Step 4: Simplify right side
    27,787.98x = 576,775,498.03
  5. Step 5: Solve for x
    x = 576,775,498.03/27,787.98
  6. Step 6: Final answer
    x = 20,756.29

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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.