Home / 21,324.52-31,986.78-20,741.32

Finding the Fourth Proportional to 21,324.52, 31,986.78 and 20,741.32

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Solution

The fourth proportional to 21,324.52, 31,986.78 and 20,741.32 is: 31,111.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.52 : 31,986.78 = 20,741.32 : x
  2. Step 2: Convert to fraction form
    21,324.52/31,986.78 = 20,741.32/x
  3. Step 3: Cross multiply
    21,324.52x = 31,986.78 × 20,741.32
  4. Step 4: Simplify right side
    21,324.52x = 663,448,039.75
  5. Step 5: Solve for x
    x = 663,448,039.75/21,324.52
  6. Step 6: Final answer
    x = 31,111.98

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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.