Home / 21,077.92-29,087.52-11,646.40

Finding the Fourth Proportional to 21,077.92, 29,087.52 and 11,646.40

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Solution

The fourth proportional to 21,077.92, 29,087.52 and 11,646.40 is: 16,072.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.92 : 29,087.52 = 11,646.40 : x
  2. Step 2: Convert to fraction form
    21,077.92/29,087.52 = 11,646.40/x
  3. Step 3: Cross multiply
    21,077.92x = 29,087.52 × 11,646.40
  4. Step 4: Simplify right side
    21,077.92x = 338,764,892.93
  5. Step 5: Solve for x
    x = 338,764,892.93/21,077.92
  6. Step 6: Final answer
    x = 16,072.03

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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.