Home / 19,915.04-29,843.40-12,105.02

Finding the Fourth Proportional to 19,915.04, 29,843.40 and 12,105.02

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Solution

The fourth proportional to 19,915.04, 29,843.40 and 12,105.02 is: 18,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.04 : 29,843.40 = 12,105.02 : x
  2. Step 2: Convert to fraction form
    19,915.04/29,843.40 = 12,105.02/x
  3. Step 3: Cross multiply
    19,915.04x = 29,843.40 × 12,105.02
  4. Step 4: Simplify right side
    19,915.04x = 361,254,953.87
  5. Step 5: Solve for x
    x = 361,254,953.87/19,915.04
  6. Step 6: Final answer
    x = 18,139.81

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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.