Home / 28,164.33-42,237.86-19,455.21

Finding the Fourth Proportional to 28,164.33, 42,237.86 and 19,455.21

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Solution

The fourth proportional to 28,164.33, 42,237.86 and 19,455.21 is: 29,176.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.33 : 42,237.86 = 19,455.21 : x
  2. Step 2: Convert to fraction form
    28,164.33/42,237.86 = 19,455.21/x
  3. Step 3: Cross multiply
    28,164.33x = 42,237.86 × 19,455.21
  4. Step 4: Simplify right side
    28,164.33x = 821,746,338.97
  5. Step 5: Solve for x
    x = 821,746,338.97/28,164.33
  6. Step 6: Final answer
    x = 29,176.85

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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.