Home / 15,788.04-21,787.68-8,714.47

Finding the Fourth Proportional to 15,788.04, 21,787.68 and 8,714.47

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Solution

The fourth proportional to 15,788.04, 21,787.68 and 8,714.47 is: 12,026.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.04 : 21,787.68 = 8,714.47 : x
  2. Step 2: Convert to fraction form
    15,788.04/21,787.68 = 8,714.47/x
  3. Step 3: Cross multiply
    15,788.04x = 21,787.68 × 8,714.47
  4. Step 4: Simplify right side
    15,788.04x = 189,867,931.22
  5. Step 5: Solve for x
    x = 189,867,931.22/15,788.04
  6. Step 6: Final answer
    x = 12,026.06

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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.