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Finding the Fourth Proportional to 30,455.00, 42,029.20 and 17,026.25

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Solution

The fourth proportional to 30,455.00, 42,029.20 and 17,026.25 is: 23,496.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,455.00 : 42,029.20 = 17,026.25 : x
  2. Step 2: Convert to fraction form
    30,455.00/42,029.20 = 17,026.25/x
  3. Step 3: Cross multiply
    30,455.00x = 42,029.20 × 17,026.25
  4. Step 4: Simplify right side
    30,455.00x = 715,599,761.94
  5. Step 5: Solve for x
    x = 715,599,761.94/30,455.00
  6. Step 6: Final answer
    x = 23,496.95

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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.