Home / 21,531.28-29,714.64-12,099.82

Finding the Fourth Proportional to 21,531.28, 29,714.64 and 12,099.82

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Solution

The fourth proportional to 21,531.28, 29,714.64 and 12,099.82 is: 16,698.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.28 : 29,714.64 = 12,099.82 : x
  2. Step 2: Convert to fraction form
    21,531.28/29,714.64 = 12,099.82/x
  3. Step 3: Cross multiply
    21,531.28x = 29,714.64 × 12,099.82
  4. Step 4: Simplify right side
    21,531.28x = 359,541,795.36
  5. Step 5: Solve for x
    x = 359,541,795.36/21,531.28
  6. Step 6: Final answer
    x = 16,698.58

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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.