Home / 21,339.78-29,448.96-11,908.98

Finding the Fourth Proportional to 21,339.78, 29,448.96 and 11,908.98

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Solution

The fourth proportional to 21,339.78, 29,448.96 and 11,908.98 is: 16,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.78 : 29,448.96 = 11,908.98 : x
  2. Step 2: Convert to fraction form
    21,339.78/29,448.96 = 11,908.98/x
  3. Step 3: Cross multiply
    21,339.78x = 29,448.96 × 11,908.98
  4. Step 4: Simplify right side
    21,339.78x = 350,707,075.66
  5. Step 5: Solve for x
    x = 350,707,075.66/21,339.78
  6. Step 6: Final answer
    x = 16,434.43

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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.