Home / 21,391.48-29,511.30-16,667.56

Finding the Fourth Proportional to 21,391.48, 29,511.30 and 16,667.56

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Solution

The fourth proportional to 21,391.48, 29,511.30 and 16,667.56 is: 22,994.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.48 : 29,511.30 = 16,667.56 : x
  2. Step 2: Convert to fraction form
    21,391.48/29,511.30 = 16,667.56/x
  3. Step 3: Cross multiply
    21,391.48x = 29,511.30 × 16,667.56
  4. Step 4: Simplify right side
    21,391.48x = 491,881,363.43
  5. Step 5: Solve for x
    x = 491,881,363.43/21,391.48
  6. Step 6: Final answer
    x = 22,994.27

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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.