Home / 19,961.13-29,941.65-6,812.40

Finding the Fourth Proportional to 19,961.13, 29,941.65 and 6,812.40

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Solution

The fourth proportional to 19,961.13, 29,941.65 and 6,812.40 is: 10,218.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,961.13 : 29,941.65 = 6,812.40 : x
  2. Step 2: Convert to fraction form
    19,961.13/29,941.65 = 6,812.40/x
  3. Step 3: Cross multiply
    19,961.13x = 29,941.65 × 6,812.40
  4. Step 4: Simplify right side
    19,961.13x = 203,974,496.46
  5. Step 5: Solve for x
    x = 203,974,496.46/19,961.13
  6. Step 6: Final answer
    x = 10,218.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.