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Finding the Fourth Proportional to 15,003.46, 20,697.88 and 8,714.62

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Solution

The fourth proportional to 15,003.46, 20,697.88 and 8,714.62 is: 12,022.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.46 : 20,697.88 = 8,714.62 : x
  2. Step 2: Convert to fraction form
    15,003.46/20,697.88 = 8,714.62/x
  3. Step 3: Cross multiply
    15,003.46x = 20,697.88 × 8,714.62
  4. Step 4: Simplify right side
    15,003.46x = 180,374,159.01
  5. Step 5: Solve for x
    x = 180,374,159.01/15,003.46
  6. Step 6: Final answer
    x = 12,022.17

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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.