Home / 21,268.61-31,904.38-7,222.91

Finding the Fourth Proportional to 21,268.61, 31,904.38 and 7,222.91

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Solution

The fourth proportional to 21,268.61, 31,904.38 and 7,222.91 is: 10,834.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.61 : 31,904.38 = 7,222.91 : x
  2. Step 2: Convert to fraction form
    21,268.61/31,904.38 = 7,222.91/x
  3. Step 3: Cross multiply
    21,268.61x = 31,904.38 × 7,222.91
  4. Step 4: Simplify right side
    21,268.61x = 230,442,314.85
  5. Step 5: Solve for x
    x = 230,442,314.85/21,268.61
  6. Step 6: Final answer
    x = 10,834.86

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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.