Home / 13,929.82-19,223.13-7,642.18

Finding the Fourth Proportional to 13,929.82, 19,223.13 and 7,642.18

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Solution

The fourth proportional to 13,929.82, 19,223.13 and 7,642.18 is: 10,546.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.82 : 19,223.13 = 7,642.18 : x
  2. Step 2: Convert to fraction form
    13,929.82/19,223.13 = 7,642.18/x
  3. Step 3: Cross multiply
    13,929.82x = 19,223.13 × 7,642.18
  4. Step 4: Simplify right side
    13,929.82x = 146,906,619.62
  5. Step 5: Solve for x
    x = 146,906,619.62/13,929.82
  6. Step 6: Final answer
    x = 10,546.20

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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.