Home / 30,721.95-42,393-17,292.97

Finding the Fourth Proportional to 30,721.95, 42,393 and 17,292.97

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Solution

The fourth proportional to 30,721.95, 42,393 and 17,292.97 is: 23,862.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,721.95 : 42,393 = 17,292.97 : x
  2. Step 2: Convert to fraction form
    30,721.95/42,393 = 17,292.97/x
  3. Step 3: Cross multiply
    30,721.95x = 42,393 × 17,292.97
  4. Step 4: Simplify right side
    30,721.95x = 733,100,877.21
  5. Step 5: Solve for x
    x = 733,100,877.21/30,721.95
  6. Step 6: Final answer
    x = 23,862.45

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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.