Home / 14,434.88-19,920.13-8,147.66

Finding the Fourth Proportional to 14,434.88, 19,920.13 and 8,147.66

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Solution

The fourth proportional to 14,434.88, 19,920.13 and 8,147.66 is: 11,243.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,434.88 : 19,920.13 = 8,147.66 : x
  2. Step 2: Convert to fraction form
    14,434.88/19,920.13 = 8,147.66/x
  3. Step 3: Cross multiply
    14,434.88x = 19,920.13 × 8,147.66
  4. Step 4: Simplify right side
    14,434.88x = 162,302,326.43
  5. Step 5: Solve for x
    x = 162,302,326.43/14,434.88
  6. Step 6: Final answer
    x = 11,243.76

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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.