Home / 13,878.03-19,151.64-7,909.95

Finding the Fourth Proportional to 13,878.03, 19,151.64 and 7,909.95

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Solution

The fourth proportional to 13,878.03, 19,151.64 and 7,909.95 is: 10,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.03 : 19,151.64 = 7,909.95 : x
  2. Step 2: Convert to fraction form
    13,878.03/19,151.64 = 7,909.95/x
  3. Step 3: Cross multiply
    13,878.03x = 19,151.64 × 7,909.95
  4. Step 4: Simplify right side
    13,878.03x = 151,488,514.82
  5. Step 5: Solve for x
    x = 151,488,514.82/13,878.03
  6. Step 6: Final answer
    x = 10,915.71

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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.