Home / 10,119.80-13,965.26-5,643.61

Finding the Fourth Proportional to 10,119.80, 13,965.26 and 5,643.61

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Solution

The fourth proportional to 10,119.80, 13,965.26 and 5,643.61 is: 7,788.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.80 : 13,965.26 = 5,643.61 : x
  2. Step 2: Convert to fraction form
    10,119.80/13,965.26 = 5,643.61/x
  3. Step 3: Cross multiply
    10,119.80x = 13,965.26 × 5,643.61
  4. Step 4: Simplify right side
    10,119.80x = 78,814,480.99
  5. Step 5: Solve for x
    x = 78,814,480.99/10,119.80
  6. Step 6: Final answer
    x = 7,788.15

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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.