Home / 20,511.28-30,774.08-6,473.48

Finding the Fourth Proportional to 20,511.28, 30,774.08 and 6,473.48

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Solution

The fourth proportional to 20,511.28, 30,774.08 and 6,473.48 is: 9,712.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.28 : 30,774.08 = 6,473.48 : x
  2. Step 2: Convert to fraction form
    20,511.28/30,774.08 = 6,473.48/x
  3. Step 3: Cross multiply
    20,511.28x = 30,774.08 × 6,473.48
  4. Step 4: Simplify right side
    20,511.28x = 199,215,391.40
  5. Step 5: Solve for x
    x = 199,215,391.40/20,511.28
  6. Step 6: Final answer
    x = 9,712.48

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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.