Home / 30,838.26-42,556.87-16,691.20

Finding the Fourth Proportional to 30,838.26, 42,556.87 and 16,691.20

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Solution

The fourth proportional to 30,838.26, 42,556.87 and 16,691.20 is: 23,033.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.26 : 42,556.87 = 16,691.20 : x
  2. Step 2: Convert to fraction form
    30,838.26/42,556.87 = 16,691.20/x
  3. Step 3: Cross multiply
    30,838.26x = 42,556.87 × 16,691.20
  4. Step 4: Simplify right side
    30,838.26x = 710,325,228.54
  5. Step 5: Solve for x
    x = 710,325,228.54/30,838.26
  6. Step 6: Final answer
    x = 23,033.89

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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.