Home / 20,743.08-31,103.68-9,042.63

Finding the Fourth Proportional to 20,743.08, 31,103.68 and 9,042.63

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Solution

The fourth proportional to 20,743.08, 31,103.68 and 9,042.63 is: 13,559.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.08 : 31,103.68 = 9,042.63 : x
  2. Step 2: Convert to fraction form
    20,743.08/31,103.68 = 9,042.63/x
  3. Step 3: Cross multiply
    20,743.08x = 31,103.68 × 9,042.63
  4. Step 4: Simplify right side
    20,743.08x = 281,259,069.88
  5. Step 5: Solve for x
    x = 281,259,069.88/20,743.08
  6. Step 6: Final answer
    x = 13,559.18

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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.