Home / 10,120.08-13,965-5,643.48

Finding the Fourth Proportional to 10,120.08, 13,965 and 5,643.48

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Solution

The fourth proportional to 10,120.08, 13,965 and 5,643.48 is: 7,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.08 : 13,965 = 5,643.48 : x
  2. Step 2: Convert to fraction form
    10,120.08/13,965 = 5,643.48/x
  3. Step 3: Cross multiply
    10,120.08x = 13,965 × 5,643.48
  4. Step 4: Simplify right side
    10,120.08x = 78,811,198.20
  5. Step 5: Solve for x
    x = 78,811,198.20/10,120.08
  6. Step 6: Final answer
    x = 7,787.61

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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.