Home / 15,714.48-21,685.61-8,544.20

Finding the Fourth Proportional to 15,714.48, 21,685.61 and 8,544.20

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Solution

The fourth proportional to 15,714.48, 21,685.61 and 8,544.20 is: 11,790.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,714.48 : 21,685.61 = 8,544.20 : x
  2. Step 2: Convert to fraction form
    15,714.48/21,685.61 = 8,544.20/x
  3. Step 3: Cross multiply
    15,714.48x = 21,685.61 × 8,544.20
  4. Step 4: Simplify right side
    15,714.48x = 185,286,037.81
  5. Step 5: Solve for x
    x = 185,286,037.81/15,714.48
  6. Step 6: Final answer
    x = 11,790.78

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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.