Home / 15,788.53-21,788.18-8,714.96

Finding the Fourth Proportional to 15,788.53, 21,788.18 and 8,714.96

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Solution

The fourth proportional to 15,788.53, 21,788.18 and 8,714.96 is: 12,026.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.53 : 21,788.18 = 8,714.96 : x
  2. Step 2: Convert to fraction form
    15,788.53/21,788.18 = 8,714.96/x
  3. Step 3: Cross multiply
    15,788.53x = 21,788.18 × 8,714.96
  4. Step 4: Simplify right side
    15,788.53x = 189,883,079.04
  5. Step 5: Solve for x
    x = 189,883,079.04/15,788.53
  6. Step 6: Final answer
    x = 12,026.65

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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.