Home / 21,099.66-31,649.79-5,517.28

Finding the Fourth Proportional to 21,099.66, 31,649.79 and 5,517.28

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Solution

The fourth proportional to 21,099.66, 31,649.79 and 5,517.28 is: 8,276.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.66 : 31,649.79 = 5,517.28 : x
  2. Step 2: Convert to fraction form
    21,099.66/31,649.79 = 5,517.28/x
  3. Step 3: Cross multiply
    21,099.66x = 31,649.79 × 5,517.28
  4. Step 4: Simplify right side
    21,099.66x = 174,620,782.59
  5. Step 5: Solve for x
    x = 174,620,782.59/21,099.66
  6. Step 6: Final answer
    x = 8,276.00

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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.