Home / 13,258.06-19,869.89-6,139.61

Finding the Fourth Proportional to 13,258.06, 19,869.89 and 6,139.61

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Solution

The fourth proportional to 13,258.06, 19,869.89 and 6,139.61 is: 9,201.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.06 : 19,869.89 = 6,139.61 : x
  2. Step 2: Convert to fraction form
    13,258.06/19,869.89 = 6,139.61/x
  3. Step 3: Cross multiply
    13,258.06x = 19,869.89 × 6,139.61
  4. Step 4: Simplify right side
    13,258.06x = 121,993,375.34
  5. Step 5: Solve for x
    x = 121,993,375.34/13,258.06
  6. Step 6: Final answer
    x = 9,201.45

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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.