Home / 30,717.60-42,391.80-17,288.16

Finding the Fourth Proportional to 30,717.60, 42,391.80 and 17,288.16

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Solution

The fourth proportional to 30,717.60, 42,391.80 and 17,288.16 is: 23,858.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,717.60 : 42,391.80 = 17,288.16 : x
  2. Step 2: Convert to fraction form
    30,717.60/42,391.80 = 17,288.16/x
  3. Step 3: Cross multiply
    30,717.60x = 42,391.80 × 17,288.16
  4. Step 4: Simplify right side
    30,717.60x = 732,876,221.09
  5. Step 5: Solve for x
    x = 732,876,221.09/30,717.60
  6. Step 6: Final answer
    x = 23,858.51

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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.