Home / 21,149.67-29,178.70-13,600.17

Finding the Fourth Proportional to 21,149.67, 29,178.70 and 13,600.17

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Solution

The fourth proportional to 21,149.67, 29,178.70 and 13,600.17 is: 18,763.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.67 : 29,178.70 = 13,600.17 : x
  2. Step 2: Convert to fraction form
    21,149.67/29,178.70 = 13,600.17/x
  3. Step 3: Cross multiply
    21,149.67x = 29,178.70 × 13,600.17
  4. Step 4: Simplify right side
    21,149.67x = 396,835,134.49
  5. Step 5: Solve for x
    x = 396,835,134.49/21,149.67
  6. Step 6: Final answer
    x = 18,763.18

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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.