Home / 13,386.24-18,479.36-8,917.44

Finding the Fourth Proportional to 13,386.24, 18,479.36 and 8,917.44

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Solution

The fourth proportional to 13,386.24, 18,479.36 and 8,917.44 is: 12,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.24 : 18,479.36 = 8,917.44 : x
  2. Step 2: Convert to fraction form
    13,386.24/18,479.36 = 8,917.44/x
  3. Step 3: Cross multiply
    13,386.24x = 18,479.36 × 8,917.44
  4. Step 4: Simplify right side
    13,386.24x = 164,788,584.04
  5. Step 5: Solve for x
    x = 164,788,584.04/13,386.24
  6. Step 6: Final answer
    x = 12,310.30

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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.