Home / 28,143.36-38,837.39-15,396.21

Finding the Fourth Proportional to 28,143.36, 38,837.39 and 15,396.21

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Solution

The fourth proportional to 28,143.36, 38,837.39 and 15,396.21 is: 21,246.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.36 : 38,837.39 = 15,396.21 : x
  2. Step 2: Convert to fraction form
    28,143.36/38,837.39 = 15,396.21/x
  3. Step 3: Cross multiply
    28,143.36x = 38,837.39 × 15,396.21
  4. Step 4: Simplify right side
    28,143.36x = 597,948,535.31
  5. Step 5: Solve for x
    x = 597,948,535.31/28,143.36
  6. Step 6: Final answer
    x = 21,246.52

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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.