Home / 15,514.30-21,409.50-8,440.66

Finding the Fourth Proportional to 15,514.30, 21,409.50 and 8,440.66

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Solution

The fourth proportional to 15,514.30, 21,409.50 and 8,440.66 is: 11,647.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.30 : 21,409.50 = 8,440.66 : x
  2. Step 2: Convert to fraction form
    15,514.30/21,409.50 = 8,440.66/x
  3. Step 3: Cross multiply
    15,514.30x = 21,409.50 × 8,440.66
  4. Step 4: Simplify right side
    15,514.30x = 180,710,310.27
  5. Step 5: Solve for x
    x = 180,710,310.27/15,514.30
  6. Step 6: Final answer
    x = 11,647.98

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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.