Home / 15,385.92-21,224.97-9,642.33

Finding the Fourth Proportional to 15,385.92, 21,224.97 and 9,642.33

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Solution

The fourth proportional to 15,385.92, 21,224.97 and 9,642.33 is: 13,301.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.92 : 21,224.97 = 9,642.33 : x
  2. Step 2: Convert to fraction form
    15,385.92/21,224.97 = 9,642.33/x
  3. Step 3: Cross multiply
    15,385.92x = 21,224.97 × 9,642.33
  4. Step 4: Simplify right side
    15,385.92x = 204,658,164.98
  5. Step 5: Solve for x
    x = 204,658,164.98/15,385.92
  6. Step 6: Final answer
    x = 13,301.65

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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.