Home / 11,514.09-15,890.85-6,478.53

Finding the Fourth Proportional to 11,514.09, 15,890.85 and 6,478.53

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Solution

The fourth proportional to 11,514.09, 15,890.85 and 6,478.53 is: 8,941.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,514.09 : 15,890.85 = 6,478.53 : x
  2. Step 2: Convert to fraction form
    11,514.09/15,890.85 = 6,478.53/x
  3. Step 3: Cross multiply
    11,514.09x = 15,890.85 × 6,478.53
  4. Step 4: Simplify right side
    11,514.09x = 102,949,348.45
  5. Step 5: Solve for x
    x = 102,949,348.45/11,514.09
  6. Step 6: Final answer
    x = 8,941.16

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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.