Home / 9,709.80-13,390.28-6,351.56

Finding the Fourth Proportional to 9,709.80, 13,390.28 and 6,351.56

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Solution

The fourth proportional to 9,709.80, 13,390.28 and 6,351.56 is: 8,759.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,709.80 : 13,390.28 = 6,351.56 : x
  2. Step 2: Convert to fraction form
    9,709.80/13,390.28 = 6,351.56/x
  3. Step 3: Cross multiply
    9,709.80x = 13,390.28 × 6,351.56
  4. Step 4: Simplify right side
    9,709.80x = 85,049,166.84
  5. Step 5: Solve for x
    x = 85,049,166.84/9,709.80
  6. Step 6: Final answer
    x = 8,759.11

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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.