Home / 21,368.76-29,489.20-11,808.87

Finding the Fourth Proportional to 21,368.76, 29,489.20 and 11,808.87

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Solution

The fourth proportional to 21,368.76, 29,489.20 and 11,808.87 is: 16,296.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368.76 : 29,489.20 = 11,808.87 : x
  2. Step 2: Convert to fraction form
    21,368.76/29,489.20 = 11,808.87/x
  3. Step 3: Cross multiply
    21,368.76x = 29,489.20 × 11,808.87
  4. Step 4: Simplify right side
    21,368.76x = 348,234,129.20
  5. Step 5: Solve for x
    x = 348,234,129.20/21,368.76
  6. Step 6: Final answer
    x = 16,296.41

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Why These Related Problems?

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