Home / 15,514.64-21,409.44-8,440.88

Finding the Fourth Proportional to 15,514.64, 21,409.44 and 8,440.88

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Solution

The fourth proportional to 15,514.64, 21,409.44 and 8,440.88 is: 11,648.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.64 : 21,409.44 = 8,440.88 : x
  2. Step 2: Convert to fraction form
    15,514.64/21,409.44 = 8,440.88/x
  3. Step 3: Cross multiply
    15,514.64x = 21,409.44 × 8,440.88
  4. Step 4: Simplify right side
    15,514.64x = 180,714,513.91
  5. Step 5: Solve for x
    x = 180,714,513.91/15,514.64
  6. Step 6: Final answer
    x = 11,648.00

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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.