Home / 15,449.58-21,315.36-8,734.53

Finding the Fourth Proportional to 15,449.58, 21,315.36 and 8,734.53

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Solution

The fourth proportional to 15,449.58, 21,315.36 and 8,734.53 is: 12,050.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.58 : 21,315.36 = 8,734.53 : x
  2. Step 2: Convert to fraction form
    15,449.58/21,315.36 = 8,734.53/x
  3. Step 3: Cross multiply
    15,449.58x = 21,315.36 × 8,734.53
  4. Step 4: Simplify right side
    15,449.58x = 186,179,651.38
  5. Step 5: Solve for x
    x = 186,179,651.38/15,449.58
  6. Step 6: Final answer
    x = 12,050.79

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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.