Home / 9,947.80-13,725.48-6,406.75

Finding the Fourth Proportional to 9,947.80, 13,725.48 and 6,406.75

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Solution

The fourth proportional to 9,947.80, 13,725.48 and 6,406.75 is: 8,839.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,947.80 : 13,725.48 = 6,406.75 : x
  2. Step 2: Convert to fraction form
    9,947.80/13,725.48 = 6,406.75/x
  3. Step 3: Cross multiply
    9,947.80x = 13,725.48 × 6,406.75
  4. Step 4: Simplify right side
    9,947.80x = 87,935,718.99
  5. Step 5: Solve for x
    x = 87,935,718.99/9,947.80
  6. Step 6: Final answer
    x = 8,839.72

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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.