Home / 21,049.68-29,041.80-13,977.52

Finding the Fourth Proportional to 21,049.68, 29,041.80 and 13,977.52

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Solution

The fourth proportional to 21,049.68, 29,041.80 and 13,977.52 is: 19,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.68 : 29,041.80 = 13,977.52 : x
  2. Step 2: Convert to fraction form
    21,049.68/29,041.80 = 13,977.52/x
  3. Step 3: Cross multiply
    21,049.68x = 29,041.80 × 13,977.52
  4. Step 4: Simplify right side
    21,049.68x = 405,932,340.34
  5. Step 5: Solve for x
    x = 405,932,340.34/21,049.68
  6. Step 6: Final answer
    x = 19,284.49

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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.