Home / 21,126.10-29,103.27-17,768.98

Finding the Fourth Proportional to 21,126.10, 29,103.27 and 17,768.98

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Solution

The fourth proportional to 21,126.10, 29,103.27 and 17,768.98 is: 24,478.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.10 : 29,103.27 = 17,768.98 : x
  2. Step 2: Convert to fraction form
    21,126.10/29,103.27 = 17,768.98/x
  3. Step 3: Cross multiply
    21,126.10x = 29,103.27 × 17,768.98
  4. Step 4: Simplify right side
    21,126.10x = 517,135,422.56
  5. Step 5: Solve for x
    x = 517,135,422.56/21,126.10
  6. Step 6: Final answer
    x = 24,478.51

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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.