Home / 28,090.30-38,733.12-22,969.90

Finding the Fourth Proportional to 28,090.30, 38,733.12 and 22,969.90

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Solution

The fourth proportional to 28,090.30, 38,733.12 and 22,969.90 is: 31,672.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.30 : 38,733.12 = 22,969.90 : x
  2. Step 2: Convert to fraction form
    28,090.30/38,733.12 = 22,969.90/x
  3. Step 3: Cross multiply
    28,090.30x = 38,733.12 × 22,969.90
  4. Step 4: Simplify right side
    28,090.30x = 889,695,893.09
  5. Step 5: Solve for x
    x = 889,695,893.09/28,090.30
  6. Step 6: Final answer
    x = 31,672.71

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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.