Home / 28,219.55-38,969.33-18,165.44

Finding the Fourth Proportional to 28,219.55, 38,969.33 and 18,165.44

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Solution

The fourth proportional to 28,219.55, 38,969.33 and 18,165.44 is: 25,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.55 : 38,969.33 = 18,165.44 : x
  2. Step 2: Convert to fraction form
    28,219.55/38,969.33 = 18,165.44/x
  3. Step 3: Cross multiply
    28,219.55x = 38,969.33 × 18,165.44
  4. Step 4: Simplify right side
    28,219.55x = 707,894,974.04
  5. Step 5: Solve for x
    x = 707,894,974.04/28,219.55
  6. Step 6: Final answer
    x = 25,085.27

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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.