Home / 21,079.22-31,618.09-5,284.38

Finding the Fourth Proportional to 21,079.22, 31,618.09 and 5,284.38

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Solution

The fourth proportional to 21,079.22, 31,618.09 and 5,284.38 is: 7,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.22 : 31,618.09 = 5,284.38 : x
  2. Step 2: Convert to fraction form
    21,079.22/31,618.09 = 5,284.38/x
  3. Step 3: Cross multiply
    21,079.22x = 31,618.09 × 5,284.38
  4. Step 4: Simplify right side
    21,079.22x = 167,082,127.61
  5. Step 5: Solve for x
    x = 167,082,127.61/21,079.22
  6. Step 6: Final answer
    x = 7,926.39

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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.