Home / 15,514.80-21,409.81-8,441.07

Finding the Fourth Proportional to 15,514.80, 21,409.81 and 8,441.07

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Solution

The fourth proportional to 15,514.80, 21,409.81 and 8,441.07 is: 11,648.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.80 : 21,409.81 = 8,441.07 : x
  2. Step 2: Convert to fraction form
    15,514.80/21,409.81 = 8,441.07/x
  3. Step 3: Cross multiply
    15,514.80x = 21,409.81 × 8,441.07
  4. Step 4: Simplify right side
    15,514.80x = 180,721,704.90
  5. Step 5: Solve for x
    x = 180,721,704.90/15,514.80
  6. Step 6: Final answer
    x = 11,648.34

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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.