Home / 20,215.11-30,326.73-8,528.28

Finding the Fourth Proportional to 20,215.11, 30,326.73 and 8,528.28

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Solution

The fourth proportional to 20,215.11, 30,326.73 and 8,528.28 is: 12,794.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.11 : 30,326.73 = 8,528.28 : x
  2. Step 2: Convert to fraction form
    20,215.11/30,326.73 = 8,528.28/x
  3. Step 3: Cross multiply
    20,215.11x = 30,326.73 × 8,528.28
  4. Step 4: Simplify right side
    20,215.11x = 258,634,844.92
  5. Step 5: Solve for x
    x = 258,634,844.92/20,215.11
  6. Step 6: Final answer
    x = 12,794.13

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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.