Home / 21,352.55-29,465.57-11,920.91

Finding the Fourth Proportional to 21,352.55, 29,465.57 and 11,920.91

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Solution

The fourth proportional to 21,352.55, 29,465.57 and 11,920.91 is: 16,450.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.55 : 29,465.57 = 11,920.91 : x
  2. Step 2: Convert to fraction form
    21,352.55/29,465.57 = 11,920.91/x
  3. Step 3: Cross multiply
    21,352.55x = 29,465.57 × 11,920.91
  4. Step 4: Simplify right side
    21,352.55x = 351,256,290.54
  5. Step 5: Solve for x
    x = 351,256,290.54/21,352.55
  6. Step 6: Final answer
    x = 16,450.32

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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.