Home / 30,838.31-42,556.86-16,691.15

Finding the Fourth Proportional to 30,838.31, 42,556.86 and 16,691.15

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Solution

The fourth proportional to 30,838.31, 42,556.86 and 16,691.15 is: 23,033.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.31 : 42,556.86 = 16,691.15 : x
  2. Step 2: Convert to fraction form
    30,838.31/42,556.86 = 16,691.15/x
  3. Step 3: Cross multiply
    30,838.31x = 42,556.86 × 16,691.15
  4. Step 4: Simplify right side
    30,838.31x = 710,322,933.79
  5. Step 5: Solve for x
    x = 710,322,933.79/30,838.31
  6. Step 6: Final answer
    x = 23,033.78

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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.