Home / 10,119.36-13,960.32-6,139.68

Finding the Fourth Proportional to 10,119.36, 13,960.32 and 6,139.68

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Solution

The fourth proportional to 10,119.36, 13,960.32 and 6,139.68 is: 8,470.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.36 : 13,960.32 = 6,139.68 : x
  2. Step 2: Convert to fraction form
    10,119.36/13,960.32 = 6,139.68/x
  3. Step 3: Cross multiply
    10,119.36x = 13,960.32 × 6,139.68
  4. Step 4: Simplify right side
    10,119.36x = 85,711,897.50
  5. Step 5: Solve for x
    x = 85,711,897.50/10,119.36
  6. Step 6: Final answer
    x = 8,470.09

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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.