Home / 21,213.50-29,272.58-12,715.47

Finding the Fourth Proportional to 21,213.50, 29,272.58 and 12,715.47

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Solution

The fourth proportional to 21,213.50, 29,272.58 and 12,715.47 is: 17,546.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.50 : 29,272.58 = 12,715.47 : x
  2. Step 2: Convert to fraction form
    21,213.50/29,272.58 = 12,715.47/x
  3. Step 3: Cross multiply
    21,213.50x = 29,272.58 × 12,715.47
  4. Step 4: Simplify right side
    21,213.50x = 372,214,549.24
  5. Step 5: Solve for x
    x = 372,214,549.24/21,213.50
  6. Step 6: Final answer
    x = 17,546.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.