Home / 15,788.10-21,787.76-8,714.53

Finding the Fourth Proportional to 15,788.10, 21,787.76 and 8,714.53

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Solution

The fourth proportional to 15,788.10, 21,787.76 and 8,714.53 is: 12,026.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.10 : 21,787.76 = 8,714.53 : x
  2. Step 2: Convert to fraction form
    15,788.10/21,787.76 = 8,714.53/x
  3. Step 3: Cross multiply
    15,788.10x = 21,787.76 × 8,714.53
  4. Step 4: Simplify right side
    15,788.10x = 189,870,022.79
  5. Step 5: Solve for x
    x = 189,870,022.79/15,788.10
  6. Step 6: Final answer
    x = 12,026.15

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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.