Home / 20,636.15-30,956.31-7,489.58

Finding the Fourth Proportional to 20,636.15, 30,956.31 and 7,489.58

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Solution

The fourth proportional to 20,636.15, 30,956.31 and 7,489.58 is: 11,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.15 : 30,956.31 = 7,489.58 : x
  2. Step 2: Convert to fraction form
    20,636.15/30,956.31 = 7,489.58/x
  3. Step 3: Cross multiply
    20,636.15x = 30,956.31 × 7,489.58
  4. Step 4: Simplify right side
    20,636.15x = 231,849,605.47
  5. Step 5: Solve for x
    x = 231,849,605.47/20,636.15
  6. Step 6: Final answer
    x = 11,235.12

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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.