Home / 15,911.69-21,955.23-9,194.85

Finding the Fourth Proportional to 15,911.69, 21,955.23 and 9,194.85

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Solution

The fourth proportional to 15,911.69, 21,955.23 and 9,194.85 is: 12,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.69 : 21,955.23 = 9,194.85 : x
  2. Step 2: Convert to fraction form
    15,911.69/21,955.23 = 9,194.85/x
  3. Step 3: Cross multiply
    15,911.69x = 21,955.23 × 9,194.85
  4. Step 4: Simplify right side
    15,911.69x = 201,875,046.57
  5. Step 5: Solve for x
    x = 201,875,046.57/15,911.69
  6. Step 6: Final answer
    x = 12,687.22

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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.