Home / 20,836.08-31,245.71-7,685.53

Finding the Fourth Proportional to 20,836.08, 31,245.71 and 7,685.53

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Solution

The fourth proportional to 20,836.08, 31,245.71 and 7,685.53 is: 11,525.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.08 : 31,245.71 = 7,685.53 : x
  2. Step 2: Convert to fraction form
    20,836.08/31,245.71 = 7,685.53/x
  3. Step 3: Cross multiply
    20,836.08x = 31,245.71 × 7,685.53
  4. Step 4: Simplify right side
    20,836.08x = 240,139,841.58
  5. Step 5: Solve for x
    x = 240,139,841.58/20,836.08
  6. Step 6: Final answer
    x = 11,525.19

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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.