Home / 11,038.50-15,238.78-8,514.95

Finding the Fourth Proportional to 11,038.50, 15,238.78 and 8,514.95

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Solution

The fourth proportional to 11,038.50, 15,238.78 and 8,514.95 is: 11,754.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,038.50 : 15,238.78 = 8,514.95 : x
  2. Step 2: Convert to fraction form
    11,038.50/15,238.78 = 8,514.95/x
  3. Step 3: Cross multiply
    11,038.50x = 15,238.78 × 8,514.95
  4. Step 4: Simplify right side
    11,038.50x = 129,757,369.09
  5. Step 5: Solve for x
    x = 129,757,369.09/11,038.50
  6. Step 6: Final answer
    x = 11,754.98

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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.