Home / 30,618.47-42,252.76-17,190.29

Finding the Fourth Proportional to 30,618.47, 42,252.76 and 17,190.29

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Solution

The fourth proportional to 30,618.47, 42,252.76 and 17,190.29 is: 23,722.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.47 : 42,252.76 = 17,190.29 : x
  2. Step 2: Convert to fraction form
    30,618.47/42,252.76 = 17,190.29/x
  3. Step 3: Cross multiply
    30,618.47x = 42,252.76 × 17,190.29
  4. Step 4: Simplify right side
    30,618.47x = 726,337,197.70
  5. Step 5: Solve for x
    x = 726,337,197.70/30,618.47
  6. Step 6: Final answer
    x = 23,722.19

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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.