Home / 21,285.73-29,371.24-12,331.59

Finding the Fourth Proportional to 21,285.73, 29,371.24 and 12,331.59

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Solution

The fourth proportional to 21,285.73, 29,371.24 and 12,331.59 is: 17,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285.73 : 29,371.24 = 12,331.59 : x
  2. Step 2: Convert to fraction form
    21,285.73/29,371.24 = 12,331.59/x
  3. Step 3: Cross multiply
    21,285.73x = 29,371.24 × 12,331.59
  4. Step 4: Simplify right side
    21,285.73x = 362,194,089.47
  5. Step 5: Solve for x
    x = 362,194,089.47/21,285.73
  6. Step 6: Final answer
    x = 17,015.82

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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.