Home / 21,531.44-29,713.08-12,099.92

Finding the Fourth Proportional to 21,531.44, 29,713.08 and 12,099.92

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Solution

The fourth proportional to 21,531.44, 29,713.08 and 12,099.92 is: 16,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.44 : 29,713.08 = 12,099.92 : x
  2. Step 2: Convert to fraction form
    21,531.44/29,713.08 = 12,099.92/x
  3. Step 3: Cross multiply
    21,531.44x = 29,713.08 × 12,099.92
  4. Step 4: Simplify right side
    21,531.44x = 359,525,890.95
  5. Step 5: Solve for x
    x = 359,525,890.95/21,531.44
  6. Step 6: Final answer
    x = 16,697.72

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1.5x scale

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.