Home / 28,329.96-39,111.36-21,562.44

Finding the Fourth Proportional to 28,329.96, 39,111.36 and 21,562.44

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Solution

The fourth proportional to 28,329.96, 39,111.36 and 21,562.44 is: 29,768.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329.96 : 39,111.36 = 21,562.44 : x
  2. Step 2: Convert to fraction form
    28,329.96/39,111.36 = 21,562.44/x
  3. Step 3: Cross multiply
    28,329.96x = 39,111.36 × 21,562.44
  4. Step 4: Simplify right side
    28,329.96x = 843,336,353.32
  5. Step 5: Solve for x
    x = 843,336,353.32/28,329.96
  6. Step 6: Final answer
    x = 29,768.36

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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.