Home / 19,995.20-30,010.97-10,643.04

Finding the Fourth Proportional to 19,995.20, 30,010.97 and 10,643.04

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Solution

The fourth proportional to 19,995.20, 30,010.97 and 10,643.04 is: 15,974.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.20 : 30,010.97 = 10,643.04 : x
  2. Step 2: Convert to fraction form
    19,995.20/30,010.97 = 10,643.04/x
  3. Step 3: Cross multiply
    19,995.20x = 30,010.97 × 10,643.04
  4. Step 4: Simplify right side
    19,995.20x = 319,407,954.15
  5. Step 5: Solve for x
    x = 319,407,954.15/19,995.20
  6. Step 6: Final answer
    x = 15,974.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.