Home / 20,643.66-30,955.71-7,999.34

Finding the Fourth Proportional to 20,643.66, 30,955.71 and 7,999.34

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Solution

The fourth proportional to 20,643.66, 30,955.71 and 7,999.34 is: 11,995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.66 : 30,955.71 = 7,999.34 : x
  2. Step 2: Convert to fraction form
    20,643.66/30,955.71 = 7,999.34/x
  3. Step 3: Cross multiply
    20,643.66x = 30,955.71 × 7,999.34
  4. Step 4: Simplify right side
    20,643.66x = 247,625,094.45
  5. Step 5: Solve for x
    x = 247,625,094.45/20,643.66
  6. Step 6: Final answer
    x = 11,995.21

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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.