Home / 10,119.12-13,965.48-6,140.40

Finding the Fourth Proportional to 10,119.12, 13,965.48 and 6,140.40

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Solution

The fourth proportional to 10,119.12, 13,965.48 and 6,140.40 is: 8,474.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.12 : 13,965.48 = 6,140.40 : x
  2. Step 2: Convert to fraction form
    10,119.12/13,965.48 = 6,140.40/x
  3. Step 3: Cross multiply
    10,119.12x = 13,965.48 × 6,140.40
  4. Step 4: Simplify right side
    10,119.12x = 85,753,633.39
  5. Step 5: Solve for x
    x = 85,753,633.39/10,119.12
  6. Step 6: Final answer
    x = 8,474.42

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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.