Home / 27,719.76-38,285.16-20,199.72

Finding the Fourth Proportional to 27,719.76, 38,285.16 and 20,199.72

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Solution

The fourth proportional to 27,719.76, 38,285.16 and 20,199.72 is: 27,898.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,719.76 : 38,285.16 = 20,199.72 : x
  2. Step 2: Convert to fraction form
    27,719.76/38,285.16 = 20,199.72/x
  3. Step 3: Cross multiply
    27,719.76x = 38,285.16 × 20,199.72
  4. Step 4: Simplify right side
    27,719.76x = 773,349,512.16
  5. Step 5: Solve for x
    x = 773,349,512.16/27,719.76
  6. Step 6: Final answer
    x = 27,898.85

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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.