Home / 10,958.21-15,122.45-5,990.21

Finding the Fourth Proportional to 10,958.21, 15,122.45 and 5,990.21

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Solution

The fourth proportional to 10,958.21, 15,122.45 and 5,990.21 is: 8,266.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,958.21 : 15,122.45 = 5,990.21 : x
  2. Step 2: Convert to fraction form
    10,958.21/15,122.45 = 5,990.21/x
  3. Step 3: Cross multiply
    10,958.21x = 15,122.45 × 5,990.21
  4. Step 4: Simplify right side
    10,958.21x = 90,586,590.58
  5. Step 5: Solve for x
    x = 90,586,590.58/10,958.21
  6. Step 6: Final answer
    x = 8,266.55

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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.