Home / 28,223.97-38,949.53-15,478.32

Finding the Fourth Proportional to 28,223.97, 38,949.53 and 15,478.32

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Solution

The fourth proportional to 28,223.97, 38,949.53 and 15,478.32 is: 21,360.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.97 : 38,949.53 = 15,478.32 : x
  2. Step 2: Convert to fraction form
    28,223.97/38,949.53 = 15,478.32/x
  3. Step 3: Cross multiply
    28,223.97x = 38,949.53 × 15,478.32
  4. Step 4: Simplify right side
    28,223.97x = 602,873,289.19
  5. Step 5: Solve for x
    x = 602,873,289.19/28,223.97
  6. Step 6: Final answer
    x = 21,360.33

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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.