Home / 13,161.20-19,748.64-6,139.17

Finding the Fourth Proportional to 13,161.20, 19,748.64 and 6,139.17

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Solution

The fourth proportional to 13,161.20, 19,748.64 and 6,139.17 is: 9,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.20 : 19,748.64 = 6,139.17 : x
  2. Step 2: Convert to fraction form
    13,161.20/19,748.64 = 6,139.17/x
  3. Step 3: Cross multiply
    13,161.20x = 19,748.64 × 6,139.17
  4. Step 4: Simplify right side
    13,161.20x = 121,240,258.23
  5. Step 5: Solve for x
    x = 121,240,258.23/13,161.20
  6. Step 6: Final answer
    x = 9,211.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.