Home / 21,087.61-29,042.01-17,518.28

Finding the Fourth Proportional to 21,087.61, 29,042.01 and 17,518.28

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Solution

The fourth proportional to 21,087.61, 29,042.01 and 17,518.28 is: 24,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.61 : 29,042.01 = 17,518.28 : x
  2. Step 2: Convert to fraction form
    21,087.61/29,042.01 = 17,518.28/x
  3. Step 3: Cross multiply
    21,087.61x = 29,042.01 × 17,518.28
  4. Step 4: Simplify right side
    21,087.61x = 508,765,917.73
  5. Step 5: Solve for x
    x = 508,765,917.73/21,087.61
  6. Step 6: Final answer
    x = 24,126.30

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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.