Home / 21,179.30-31,805.40-14,982.80

Finding the Fourth Proportional to 21,179.30, 31,805.40 and 14,982.80

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Solution

The fourth proportional to 21,179.30, 31,805.40 and 14,982.80 is: 22,499.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.30 : 31,805.40 = 14,982.80 : x
  2. Step 2: Convert to fraction form
    21,179.30/31,805.40 = 14,982.80/x
  3. Step 3: Cross multiply
    21,179.30x = 31,805.40 × 14,982.80
  4. Step 4: Simplify right side
    21,179.30x = 476,533,947.12
  5. Step 5: Solve for x
    x = 476,533,947.12/21,179.30
  6. Step 6: Final answer
    x = 22,499.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.