Home / 21,167.73-29,205.56-13,217.99

Finding the Fourth Proportional to 21,167.73, 29,205.56 and 13,217.99

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Solution

The fourth proportional to 21,167.73, 29,205.56 and 13,217.99 is: 18,237.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.73 : 29,205.56 = 13,217.99 : x
  2. Step 2: Convert to fraction form
    21,167.73/29,205.56 = 13,217.99/x
  3. Step 3: Cross multiply
    21,167.73x = 29,205.56 × 13,217.99
  4. Step 4: Simplify right side
    21,167.73x = 386,038,687.04
  5. Step 5: Solve for x
    x = 386,038,687.04/21,167.73
  6. Step 6: Final answer
    x = 18,237.13

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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.