Home / 30,531.48-42,135.03-17,101.95

Finding the Fourth Proportional to 30,531.48, 42,135.03 and 17,101.95

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Solution

The fourth proportional to 30,531.48, 42,135.03 and 17,101.95 is: 23,601.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.48 : 42,135.03 = 17,101.95 : x
  2. Step 2: Convert to fraction form
    30,531.48/42,135.03 = 17,101.95/x
  3. Step 3: Cross multiply
    30,531.48x = 42,135.03 × 17,101.95
  4. Step 4: Simplify right side
    30,531.48x = 720,591,176.31
  5. Step 5: Solve for x
    x = 720,591,176.31/30,531.48
  6. Step 6: Final answer
    x = 23,601.58

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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.