Home / 19,921.68-29,900.95-10,067.86

Finding the Fourth Proportional to 19,921.68, 29,900.95 and 10,067.86

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Solution

The fourth proportional to 19,921.68, 29,900.95 and 10,067.86 is: 15,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.68 : 29,900.95 = 10,067.86 : x
  2. Step 2: Convert to fraction form
    19,921.68/29,900.95 = 10,067.86/x
  3. Step 3: Cross multiply
    19,921.68x = 29,900.95 × 10,067.86
  4. Step 4: Simplify right side
    19,921.68x = 301,038,590.67
  5. Step 5: Solve for x
    x = 301,038,590.67/19,921.68
  6. Step 6: Final answer
    x = 15,111.10

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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.