Home / 15,074.58-20,801.79-8,359.56

Finding the Fourth Proportional to 15,074.58, 20,801.79 and 8,359.56

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Solution

The fourth proportional to 15,074.58, 20,801.79 and 8,359.56 is: 11,535.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.58 : 20,801.79 = 8,359.56 : x
  2. Step 2: Convert to fraction form
    15,074.58/20,801.79 = 8,359.56/x
  3. Step 3: Cross multiply
    15,074.58x = 20,801.79 × 8,359.56
  4. Step 4: Simplify right side
    15,074.58x = 173,893,811.61
  5. Step 5: Solve for x
    x = 173,893,811.61/15,074.58
  6. Step 6: Final answer
    x = 11,535.57

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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.