Home / 20,422.36-30,633.45-5,631.40

Finding the Fourth Proportional to 20,422.36, 30,633.45 and 5,631.40

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Solution

The fourth proportional to 20,422.36, 30,633.45 and 5,631.40 is: 8,447.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.36 : 30,633.45 = 5,631.40 : x
  2. Step 2: Convert to fraction form
    20,422.36/30,633.45 = 5,631.40/x
  3. Step 3: Cross multiply
    20,422.36x = 30,633.45 × 5,631.40
  4. Step 4: Simplify right side
    20,422.36x = 172,509,210.33
  5. Step 5: Solve for x
    x = 172,509,210.33/20,422.36
  6. Step 6: Final answer
    x = 8,447.08

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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.