Home / 27,765.17-38,315.90-15,189.92

Finding the Fourth Proportional to 27,765.17, 38,315.90 and 15,189.92

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Solution

The fourth proportional to 27,765.17, 38,315.90 and 15,189.92 is: 20,962.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,765.17 : 38,315.90 = 15,189.92 : x
  2. Step 2: Convert to fraction form
    27,765.17/38,315.90 = 15,189.92/x
  3. Step 3: Cross multiply
    27,765.17x = 38,315.90 × 15,189.92
  4. Step 4: Simplify right side
    27,765.17x = 582,015,379.78
  5. Step 5: Solve for x
    x = 582,015,379.78/27,765.17
  6. Step 6: Final answer
    x = 20,962.07

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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.