Home / 21,178.73-29,226.20-13,110.24

Finding the Fourth Proportional to 21,178.73, 29,226.20 and 13,110.24

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Solution

The fourth proportional to 21,178.73, 29,226.20 and 13,110.24 is: 18,091.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.73 : 29,226.20 = 13,110.24 : x
  2. Step 2: Convert to fraction form
    21,178.73/29,226.20 = 13,110.24/x
  3. Step 3: Cross multiply
    21,178.73x = 29,226.20 × 13,110.24
  4. Step 4: Simplify right side
    21,178.73x = 383,162,430.74
  5. Step 5: Solve for x
    x = 383,162,430.74/21,178.73
  6. Step 6: Final answer
    x = 18,091.86

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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.