Home / 13,065.40-18,015.42-11,806.12

Finding the Fourth Proportional to 13,065.40, 18,015.42 and 11,806.12

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Solution

The fourth proportional to 13,065.40, 18,015.42 and 11,806.12 is: 16,279.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.40 : 18,015.42 = 11,806.12 : x
  2. Step 2: Convert to fraction form
    13,065.40/18,015.42 = 11,806.12/x
  3. Step 3: Cross multiply
    13,065.40x = 18,015.42 × 11,806.12
  4. Step 4: Simplify right side
    13,065.40x = 212,692,210.37
  5. Step 5: Solve for x
    x = 212,692,210.37/13,065.40
  6. Step 6: Final answer
    x = 16,279.04

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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.