Home / 13,856.11-19,116.66-7,886.26

Finding the Fourth Proportional to 13,856.11, 19,116.66 and 7,886.26

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Solution

The fourth proportional to 13,856.11, 19,116.66 and 7,886.26 is: 10,880.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,856.11 : 19,116.66 = 7,886.26 : x
  2. Step 2: Convert to fraction form
    13,856.11/19,116.66 = 7,886.26/x
  3. Step 3: Cross multiply
    13,856.11x = 19,116.66 × 7,886.26
  4. Step 4: Simplify right side
    13,856.11x = 150,758,960.20
  5. Step 5: Solve for x
    x = 150,758,960.20/13,856.11
  6. Step 6: Final answer
    x = 10,880.32

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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.