Home / 15,788.25-21,787.36-8,714.52

Finding the Fourth Proportional to 15,788.25, 21,787.36 and 8,714.52

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Solution

The fourth proportional to 15,788.25, 21,787.36 and 8,714.52 is: 12,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.25 : 21,787.36 = 8,714.52 : x
  2. Step 2: Convert to fraction form
    15,788.25/21,787.36 = 8,714.52/x
  3. Step 3: Cross multiply
    15,788.25x = 21,787.36 × 8,714.52
  4. Step 4: Simplify right side
    15,788.25x = 189,866,384.47
  5. Step 5: Solve for x
    x = 189,866,384.47/15,788.25
  6. Step 6: Final answer
    x = 12,025.80

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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.