Home / 30,669.66-42,321.27-17,239.74

Finding the Fourth Proportional to 30,669.66, 42,321.27 and 17,239.74

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Solution

The fourth proportional to 30,669.66, 42,321.27 and 17,239.74 is: 23,789.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,669.66 : 42,321.27 = 17,239.74 : x
  2. Step 2: Convert to fraction form
    30,669.66/42,321.27 = 17,239.74/x
  3. Step 3: Cross multiply
    30,669.66x = 42,321.27 × 17,239.74
  4. Step 4: Simplify right side
    30,669.66x = 729,607,691.27
  5. Step 5: Solve for x
    x = 729,607,691.27/30,669.66
  6. Step 6: Final answer
    x = 23,789.23

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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.