Home / 21,642.46-29,865.99-12,211.90

Finding the Fourth Proportional to 21,642.46, 29,865.99 and 12,211.90

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Solution

The fourth proportional to 21,642.46, 29,865.99 and 12,211.90 is: 16,852.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,642.46 : 29,865.99 = 12,211.90 : x
  2. Step 2: Convert to fraction form
    21,642.46/29,865.99 = 12,211.90/x
  3. Step 3: Cross multiply
    21,642.46x = 29,865.99 × 12,211.90
  4. Step 4: Simplify right side
    21,642.46x = 364,720,483.28
  5. Step 5: Solve for x
    x = 364,720,483.28/21,642.46
  6. Step 6: Final answer
    x = 16,852.08

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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.