Home / 30,456.90-42,031.38-17,029.66

Finding the Fourth Proportional to 30,456.90, 42,031.38 and 17,029.66

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Solution

The fourth proportional to 30,456.90, 42,031.38 and 17,029.66 is: 23,501.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,456.90 : 42,031.38 = 17,029.66 : x
  2. Step 2: Convert to fraction form
    30,456.90/42,031.38 = 17,029.66/x
  3. Step 3: Cross multiply
    30,456.90x = 42,031.38 × 17,029.66
  4. Step 4: Simplify right side
    30,456.90x = 715,780,110.73
  5. Step 5: Solve for x
    x = 715,780,110.73/30,456.90
  6. Step 6: Final answer
    x = 23,501.41

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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.