Home / 13,642.36-18,826.68-8,336.08

Finding the Fourth Proportional to 13,642.36, 18,826.68 and 8,336.08

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Solution

The fourth proportional to 13,642.36, 18,826.68 and 8,336.08 is: 11,503.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.36 : 18,826.68 = 8,336.08 : x
  2. Step 2: Convert to fraction form
    13,642.36/18,826.68 = 8,336.08/x
  3. Step 3: Cross multiply
    13,642.36x = 18,826.68 × 8,336.08
  4. Step 4: Simplify right side
    13,642.36x = 156,940,710.61
  5. Step 5: Solve for x
    x = 156,940,710.61/13,642.36
  6. Step 6: Final answer
    x = 11,503.93

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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.