Home / 23,219.28-31,969.77-20,491.02

Finding the Fourth Proportional to 23,219.28, 31,969.77 and 20,491.02

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Solution

The fourth proportional to 23,219.28, 31,969.77 and 20,491.02 is: 28,213.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,219.28 : 31,969.77 = 20,491.02 : x
  2. Step 2: Convert to fraction form
    23,219.28/31,969.77 = 20,491.02/x
  3. Step 3: Cross multiply
    23,219.28x = 31,969.77 × 20,491.02
  4. Step 4: Simplify right side
    23,219.28x = 655,093,196.47
  5. Step 5: Solve for x
    x = 655,093,196.47/23,219.28
  6. Step 6: Final answer
    x = 28,213.33

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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.