Home / 15,941.91-21,976.81-10,555.33

Finding the Fourth Proportional to 15,941.91, 21,976.81 and 10,555.33

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Solution

The fourth proportional to 15,941.91, 21,976.81 and 10,555.33 is: 14,551.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,941.91 : 21,976.81 = 10,555.33 : x
  2. Step 2: Convert to fraction form
    15,941.91/21,976.81 = 10,555.33/x
  3. Step 3: Cross multiply
    15,941.91x = 21,976.81 × 10,555.33
  4. Step 4: Simplify right side
    15,941.91x = 231,972,334.22
  5. Step 5: Solve for x
    x = 231,972,334.22/15,941.91
  6. Step 6: Final answer
    x = 14,551.10

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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.