Home / 21,102.28-29,116.93-11,669.02

Finding the Fourth Proportional to 21,102.28, 29,116.93 and 11,669.02

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Solution

The fourth proportional to 21,102.28, 29,116.93 and 11,669.02 is: 16,100.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.28 : 29,116.93 = 11,669.02 : x
  2. Step 2: Convert to fraction form
    21,102.28/29,116.93 = 11,669.02/x
  3. Step 3: Cross multiply
    21,102.28x = 29,116.93 × 11,669.02
  4. Step 4: Simplify right side
    21,102.28x = 339,766,038.51
  5. Step 5: Solve for x
    x = 339,766,038.51/21,102.28
  6. Step 6: Final answer
    x = 16,100.92

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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.