Home / 21,035.80-31,554.51-5,453.02

Finding the Fourth Proportional to 21,035.80, 31,554.51 and 5,453.02

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Solution

The fourth proportional to 21,035.80, 31,554.51 and 5,453.02 is: 8,179.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.80 : 31,554.51 = 5,453.02 : x
  2. Step 2: Convert to fraction form
    21,035.80/31,554.51 = 5,453.02/x
  3. Step 3: Cross multiply
    21,035.80x = 31,554.51 × 5,453.02
  4. Step 4: Simplify right side
    21,035.80x = 172,067,374.12
  5. Step 5: Solve for x
    x = 172,067,374.12/21,035.80
  6. Step 6: Final answer
    x = 8,179.74

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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.