Home / 21,450.38-32,111.72-19,197.74

Finding the Fourth Proportional to 21,450.38, 32,111.72 and 19,197.74

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Solution

The fourth proportional to 21,450.38, 32,111.72 and 19,197.74 is: 28,739.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.38 : 32,111.72 = 19,197.74 : x
  2. Step 2: Convert to fraction form
    21,450.38/32,111.72 = 19,197.74/x
  3. Step 3: Cross multiply
    21,450.38x = 32,111.72 × 19,197.74
  4. Step 4: Simplify right side
    21,450.38x = 616,472,451.51
  5. Step 5: Solve for x
    x = 616,472,451.51/21,450.38
  6. Step 6: Final answer
    x = 28,739.47

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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.