Home / 15,039.87-20,754.76-8,325.35

Finding the Fourth Proportional to 15,039.87, 20,754.76 and 8,325.35

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Solution

The fourth proportional to 15,039.87, 20,754.76 and 8,325.35 is: 11,488.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,039.87 : 20,754.76 = 8,325.35 : x
  2. Step 2: Convert to fraction form
    15,039.87/20,754.76 = 8,325.35/x
  3. Step 3: Cross multiply
    15,039.87x = 20,754.76 × 8,325.35
  4. Step 4: Simplify right side
    15,039.87x = 172,790,661.98
  5. Step 5: Solve for x
    x = 172,790,661.98/15,039.87
  6. Step 6: Final answer
    x = 11,488.84

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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.