Home / 21,814.92-32,778.54-21,205.26

Finding the Fourth Proportional to 21,814.92, 32,778.54 and 21,205.26

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Solution

The fourth proportional to 21,814.92, 32,778.54 and 21,205.26 is: 31,862.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.92 : 32,778.54 = 21,205.26 : x
  2. Step 2: Convert to fraction form
    21,814.92/32,778.54 = 21,205.26/x
  3. Step 3: Cross multiply
    21,814.92x = 32,778.54 × 21,205.26
  4. Step 4: Simplify right side
    21,814.92x = 695,077,463.12
  5. Step 5: Solve for x
    x = 695,077,463.12/21,814.92
  6. Step 6: Final answer
    x = 31,862.48

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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.