Home / 15,738.54-21,714.27-8,931.44

Finding the Fourth Proportional to 15,738.54, 21,714.27 and 8,931.44

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Solution

The fourth proportional to 15,738.54, 21,714.27 and 8,931.44 is: 12,322.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738.54 : 21,714.27 = 8,931.44 : x
  2. Step 2: Convert to fraction form
    15,738.54/21,714.27 = 8,931.44/x
  3. Step 3: Cross multiply
    15,738.54x = 21,714.27 × 8,931.44
  4. Step 4: Simplify right side
    15,738.54x = 193,939,591.08
  5. Step 5: Solve for x
    x = 193,939,591.08/15,738.54
  6. Step 6: Final answer
    x = 12,322.59

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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.