Home / 20,581.28-30,868.68-6,539.46

Finding the Fourth Proportional to 20,581.28, 30,868.68 and 6,539.46

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Solution

The fourth proportional to 20,581.28, 30,868.68 and 6,539.46 is: 9,808.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.28 : 30,868.68 = 6,539.46 : x
  2. Step 2: Convert to fraction form
    20,581.28/30,868.68 = 6,539.46/x
  3. Step 3: Cross multiply
    20,581.28x = 30,868.68 × 6,539.46
  4. Step 4: Simplify right side
    20,581.28x = 201,864,498.11
  5. Step 5: Solve for x
    x = 201,864,498.11/20,581.28
  6. Step 6: Final answer
    x = 9,808.16

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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.