Home / 13,515.86-18,646.10-8,476.65

Finding the Fourth Proportional to 13,515.86, 18,646.10 and 8,476.65

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Solution

The fourth proportional to 13,515.86, 18,646.10 and 8,476.65 is: 11,694.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.86 : 18,646.10 = 8,476.65 : x
  2. Step 2: Convert to fraction form
    13,515.86/18,646.10 = 8,476.65/x
  3. Step 3: Cross multiply
    13,515.86x = 18,646.10 × 8,476.65
  4. Step 4: Simplify right side
    13,515.86x = 158,056,452.97
  5. Step 5: Solve for x
    x = 158,056,452.97/13,515.86
  6. Step 6: Final answer
    x = 11,694.14

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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.