Home / 30,456.36-42,029.22-17,208.36

Finding the Fourth Proportional to 30,456.36, 42,029.22 and 17,208.36

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Solution

The fourth proportional to 30,456.36, 42,029.22 and 17,208.36 is: 23,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,456.36 : 42,029.22 = 17,208.36 : x
  2. Step 2: Convert to fraction form
    30,456.36/42,029.22 = 17,208.36/x
  3. Step 3: Cross multiply
    30,456.36x = 42,029.22 × 17,208.36
  4. Step 4: Simplify right side
    30,456.36x = 723,253,948.28
  5. Step 5: Solve for x
    x = 723,253,948.28/30,456.36
  6. Step 6: Final answer
    x = 23,747.22

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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.