Home / 28,344.87-39,169.86-21,258.99

Finding the Fourth Proportional to 28,344.87, 39,169.86 and 21,258.99

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Solution

The fourth proportional to 28,344.87, 39,169.86 and 21,258.99 is: 29,377.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,344.87 : 39,169.86 = 21,258.99 : x
  2. Step 2: Convert to fraction form
    28,344.87/39,169.86 = 21,258.99/x
  3. Step 3: Cross multiply
    28,344.87x = 39,169.86 × 21,258.99
  4. Step 4: Simplify right side
    28,344.87x = 832,711,662.04
  5. Step 5: Solve for x
    x = 832,711,662.04/28,344.87
  6. Step 6: Final answer
    x = 29,377.86

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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.