Home / 21,178.74-29,225.84-11,747.10

Finding the Fourth Proportional to 21,178.74, 29,225.84 and 11,747.10

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Solution

The fourth proportional to 21,178.74, 29,225.84 and 11,747.10 is: 16,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.74 : 29,225.84 = 11,747.10 : x
  2. Step 2: Convert to fraction form
    21,178.74/29,225.84 = 11,747.10/x
  3. Step 3: Cross multiply
    21,178.74x = 29,225.84 × 11,747.10
  4. Step 4: Simplify right side
    21,178.74x = 343,318,806.33
  5. Step 5: Solve for x
    x = 343,318,806.33/21,178.74
  6. Step 6: Final answer
    x = 16,210.54

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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.