Home / 21,209.18-29,268.95-11,649.96

Finding the Fourth Proportional to 21,209.18, 29,268.95 and 11,649.96

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Solution

The fourth proportional to 21,209.18, 29,268.95 and 11,649.96 is: 16,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.18 : 29,268.95 = 11,649.96 : x
  2. Step 2: Convert to fraction form
    21,209.18/29,268.95 = 11,649.96/x
  3. Step 3: Cross multiply
    21,209.18x = 29,268.95 × 11,649.96
  4. Step 4: Simplify right side
    21,209.18x = 340,982,038.49
  5. Step 5: Solve for x
    x = 340,982,038.49/21,209.18
  6. Step 6: Final answer
    x = 16,077.10

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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.