Home / 28,266.26-38,985.90-20,709.86

Finding the Fourth Proportional to 28,266.26, 38,985.90 and 20,709.86

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Solution

The fourth proportional to 28,266.26, 38,985.90 and 20,709.86 is: 28,563.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.26 : 38,985.90 = 20,709.86 : x
  2. Step 2: Convert to fraction form
    28,266.26/38,985.90 = 20,709.86/x
  3. Step 3: Cross multiply
    28,266.26x = 38,985.90 × 20,709.86
  4. Step 4: Simplify right side
    28,266.26x = 807,392,530.97
  5. Step 5: Solve for x
    x = 807,392,530.97/28,266.26
  6. Step 6: Final answer
    x = 28,563.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.