Home / 15,434.82-21,305.64-10,131.36

Finding the Fourth Proportional to 15,434.82, 21,305.64 and 10,131.36

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Solution

The fourth proportional to 15,434.82, 21,305.64 and 10,131.36 is: 13,984.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.82 : 21,305.64 = 10,131.36 : x
  2. Step 2: Convert to fraction form
    15,434.82/21,305.64 = 10,131.36/x
  3. Step 3: Cross multiply
    15,434.82x = 21,305.64 × 10,131.36
  4. Step 4: Simplify right side
    15,434.82x = 215,855,108.87
  5. Step 5: Solve for x
    x = 215,855,108.87/15,434.82
  6. Step 6: Final answer
    x = 13,984.95

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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.