Home / 21,357.59-29,468.97-12,400.47

Finding the Fourth Proportional to 21,357.59, 29,468.97 and 12,400.47

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Solution

The fourth proportional to 21,357.59, 29,468.97 and 12,400.47 is: 17,110.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.59 : 29,468.97 = 12,400.47 : x
  2. Step 2: Convert to fraction form
    21,357.59/29,468.97 = 12,400.47/x
  3. Step 3: Cross multiply
    21,357.59x = 29,468.97 × 12,400.47
  4. Step 4: Simplify right side
    21,357.59x = 365,429,078.42
  5. Step 5: Solve for x
    x = 365,429,078.42/21,357.59
  6. Step 6: Final answer
    x = 17,110.04

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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.