Home / 28,308.20-42,422.06-20,854.04

Finding the Fourth Proportional to 28,308.20, 42,422.06 and 20,854.04

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Solution

The fourth proportional to 28,308.20, 42,422.06 and 20,854.04 is: 31,251.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,308.20 : 42,422.06 = 20,854.04 : x
  2. Step 2: Convert to fraction form
    28,308.20/42,422.06 = 20,854.04/x
  3. Step 3: Cross multiply
    28,308.20x = 42,422.06 × 20,854.04
  4. Step 4: Simplify right side
    28,308.20x = 884,671,336.12
  5. Step 5: Solve for x
    x = 884,671,336.12/28,308.20
  6. Step 6: Final answer
    x = 31,251.42

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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.