Home / 15,087.87-20,820.92-8,373.38

Finding the Fourth Proportional to 15,087.87, 20,820.92 and 8,373.38

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Solution

The fourth proportional to 15,087.87, 20,820.92 and 8,373.38 is: 11,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,087.87 : 20,820.92 = 8,373.38 : x
  2. Step 2: Convert to fraction form
    15,087.87/20,820.92 = 8,373.38/x
  3. Step 3: Cross multiply
    15,087.87x = 20,820.92 × 8,373.38
  4. Step 4: Simplify right side
    15,087.87x = 174,341,329.14
  5. Step 5: Solve for x
    x = 174,341,329.14/15,087.87
  6. Step 6: Final answer
    x = 11,555.07

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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.