Home / 15,143.90-20,883.52-10,108.33

Finding the Fourth Proportional to 15,143.90, 20,883.52 and 10,108.33

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Solution

The fourth proportional to 15,143.90, 20,883.52 and 10,108.33 is: 13,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.90 : 20,883.52 = 10,108.33 : x
  2. Step 2: Convert to fraction form
    15,143.90/20,883.52 = 10,108.33/x
  3. Step 3: Cross multiply
    15,143.90x = 20,883.52 × 10,108.33
  4. Step 4: Simplify right side
    15,143.90x = 211,097,472.15
  5. Step 5: Solve for x
    x = 211,097,472.15/15,143.90
  6. Step 6: Final answer
    x = 13,939.44

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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.