Home / 21,168.90-29,214.81-11,740.50

Finding the Fourth Proportional to 21,168.90, 29,214.81 and 11,740.50

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Solution

The fourth proportional to 21,168.90, 29,214.81 and 11,740.50 is: 16,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.90 : 29,214.81 = 11,740.50 : x
  2. Step 2: Convert to fraction form
    21,168.90/29,214.81 = 11,740.50/x
  3. Step 3: Cross multiply
    21,168.90x = 29,214.81 × 11,740.50
  4. Step 4: Simplify right side
    21,168.90x = 342,996,476.81
  5. Step 5: Solve for x
    x = 342,996,476.81/21,168.90
  6. Step 6: Final answer
    x = 16,202.85

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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.