Home / 10,119.84-13,965.42-5,643.66

Finding the Fourth Proportional to 10,119.84, 13,965.42 and 5,643.66

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Solution

The fourth proportional to 10,119.84, 13,965.42 and 5,643.66 is: 7,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.84 : 13,965.42 = 5,643.66 : x
  2. Step 2: Convert to fraction form
    10,119.84/13,965.42 = 5,643.66/x
  3. Step 3: Cross multiply
    10,119.84x = 13,965.42 × 5,643.66
  4. Step 4: Simplify right side
    10,119.84x = 78,816,082.24
  5. Step 5: Solve for x
    x = 78,816,082.24/10,119.84
  6. Step 6: Final answer
    x = 7,788.27

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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.