Home / 15,185.91-20,955.89-11,205.57

Finding the Fourth Proportional to 15,185.91, 20,955.89 and 11,205.57

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Solution

The fourth proportional to 15,185.91, 20,955.89 and 11,205.57 is: 15,463.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.91 : 20,955.89 = 11,205.57 : x
  2. Step 2: Convert to fraction form
    15,185.91/20,955.89 = 11,205.57/x
  3. Step 3: Cross multiply
    15,185.91x = 20,955.89 × 11,205.57
  4. Step 4: Simplify right side
    15,185.91x = 234,822,636.28
  5. Step 5: Solve for x
    x = 234,822,636.28/15,185.91
  6. Step 6: Final answer
    x = 15,463.19

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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.