Home / 27,719.28-38,256.12-15,785.46

Finding the Fourth Proportional to 27,719.28, 38,256.12 and 15,785.46

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Solution

The fourth proportional to 27,719.28, 38,256.12 and 15,785.46 is: 21,785.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,719.28 : 38,256.12 = 15,785.46 : x
  2. Step 2: Convert to fraction form
    27,719.28/38,256.12 = 15,785.46/x
  3. Step 3: Cross multiply
    27,719.28x = 38,256.12 × 15,785.46
  4. Step 4: Simplify right side
    27,719.28x = 603,890,452.02
  5. Step 5: Solve for x
    x = 603,890,452.02/27,719.28
  6. Step 6: Final answer
    x = 21,785.94

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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.