Home / 27,787.06-38,346.15-15,211.81

Finding the Fourth Proportional to 27,787.06, 38,346.15 and 15,211.81

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Solution

The fourth proportional to 27,787.06, 38,346.15 and 15,211.81 is: 20,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.06 : 38,346.15 = 15,211.81 : x
  2. Step 2: Convert to fraction form
    27,787.06/38,346.15 = 15,211.81/x
  3. Step 3: Cross multiply
    27,787.06x = 38,346.15 × 15,211.81
  4. Step 4: Simplify right side
    27,787.06x = 583,314,348.03
  5. Step 5: Solve for x
    x = 583,314,348.03/27,787.06
  6. Step 6: Final answer
    x = 20,992.30

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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.