Home / 21,071.44-31,607.14-6,279.99

Finding the Fourth Proportional to 21,071.44, 31,607.14 and 6,279.99

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Solution

The fourth proportional to 21,071.44, 31,607.14 and 6,279.99 is: 9,419.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.44 : 31,607.14 = 6,279.99 : x
  2. Step 2: Convert to fraction form
    21,071.44/31,607.14 = 6,279.99/x
  3. Step 3: Cross multiply
    21,071.44x = 31,607.14 × 6,279.99
  4. Step 4: Simplify right side
    21,071.44x = 198,492,523.13
  5. Step 5: Solve for x
    x = 198,492,523.13/21,071.44
  6. Step 6: Final answer
    x = 9,419.98

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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.