Home / 21,719.76-32,581.46-6,930.78

Finding the Fourth Proportional to 21,719.76, 32,581.46 and 6,930.78

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Solution

The fourth proportional to 21,719.76, 32,581.46 and 6,930.78 is: 10,396.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.76 : 32,581.46 = 6,930.78 : x
  2. Step 2: Convert to fraction form
    21,719.76/32,581.46 = 6,930.78/x
  3. Step 3: Cross multiply
    21,719.76x = 32,581.46 × 6,930.78
  4. Step 4: Simplify right side
    21,719.76x = 225,814,931.34
  5. Step 5: Solve for x
    x = 225,814,931.34/21,719.76
  6. Step 6: Final answer
    x = 10,396.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.