Home / 9,813.60-13,542.72-5,621.84

Finding the Fourth Proportional to 9,813.60, 13,542.72 and 5,621.84

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Solution

The fourth proportional to 9,813.60, 13,542.72 and 5,621.84 is: 7,758.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,813.60 : 13,542.72 = 5,621.84 : x
  2. Step 2: Convert to fraction form
    9,813.60/13,542.72 = 5,621.84/x
  3. Step 3: Cross multiply
    9,813.60x = 13,542.72 × 5,621.84
  4. Step 4: Simplify right side
    9,813.60x = 76,135,005.00
  5. Step 5: Solve for x
    x = 76,135,005.00/9,813.60
  6. Step 6: Final answer
    x = 7,758.11

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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.