Home / 21,098.55-29,116.22-11,667.45

Finding the Fourth Proportional to 21,098.55, 29,116.22 and 11,667.45

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Solution

The fourth proportional to 21,098.55, 29,116.22 and 11,667.45 is: 16,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.55 : 29,116.22 = 11,667.45 : x
  2. Step 2: Convert to fraction form
    21,098.55/29,116.22 = 11,667.45/x
  3. Step 3: Cross multiply
    21,098.55x = 29,116.22 × 11,667.45
  4. Step 4: Simplify right side
    21,098.55x = 339,711,982.70
  5. Step 5: Solve for x
    x = 339,711,982.70/21,098.55
  6. Step 6: Final answer
    x = 16,101.20

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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.