Home / 15,514.06-21,409.49-8,440.46

Finding the Fourth Proportional to 15,514.06, 21,409.49 and 8,440.46

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Solution

The fourth proportional to 15,514.06, 21,409.49 and 8,440.46 is: 11,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.06 : 21,409.49 = 8,440.46 : x
  2. Step 2: Convert to fraction form
    15,514.06/21,409.49 = 8,440.46/x
  3. Step 3: Cross multiply
    15,514.06x = 21,409.49 × 8,440.46
  4. Step 4: Simplify right side
    15,514.06x = 180,705,901.76
  5. Step 5: Solve for x
    x = 180,705,901.76/15,514.06
  6. Step 6: Final answer
    x = 11,647.88

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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.