Home / 20,883.32-28,857.16-15,208.18

Finding the Fourth Proportional to 20,883.32, 28,857.16 and 15,208.18

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Solution

The fourth proportional to 20,883.32, 28,857.16 and 15,208.18 is: 21,015.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.32 : 28,857.16 = 15,208.18 : x
  2. Step 2: Convert to fraction form
    20,883.32/28,857.16 = 15,208.18/x
  3. Step 3: Cross multiply
    20,883.32x = 28,857.16 × 15,208.18
  4. Step 4: Simplify right side
    20,883.32x = 438,864,883.57
  5. Step 5: Solve for x
    x = 438,864,883.57/20,883.32
  6. Step 6: Final answer
    x = 21,015.09

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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.