Home / 15,514.03-21,409.36-8,440.45

Finding the Fourth Proportional to 15,514.03, 21,409.36 and 8,440.45

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Solution

The fourth proportional to 15,514.03, 21,409.36 and 8,440.45 is: 11,647.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.03 : 21,409.36 = 8,440.45 : x
  2. Step 2: Convert to fraction form
    15,514.03/21,409.36 = 8,440.45/x
  3. Step 3: Cross multiply
    15,514.03x = 21,409.36 × 8,440.45
  4. Step 4: Simplify right side
    15,514.03x = 180,704,725.89
  5. Step 5: Solve for x
    x = 180,704,725.89/15,514.03
  6. Step 6: Final answer
    x = 11,647.83

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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.