Home / 13,386.64-19,998.49-8,668.18

Finding the Fourth Proportional to 13,386.64, 19,998.49 and 8,668.18

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Solution

The fourth proportional to 13,386.64, 19,998.49 and 8,668.18 is: 12,949.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.64 : 19,998.49 = 8,668.18 : x
  2. Step 2: Convert to fraction form
    13,386.64/19,998.49 = 8,668.18/x
  3. Step 3: Cross multiply
    13,386.64x = 19,998.49 × 8,668.18
  4. Step 4: Simplify right side
    13,386.64x = 173,350,511.05
  5. Step 5: Solve for x
    x = 173,350,511.05/13,386.64
  6. Step 6: Final answer
    x = 12,949.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.