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Finding the Fourth Proportional to 10,520.64, 14,519.20 and 6,104.64

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Solution

The fourth proportional to 10,520.64, 14,519.20 and 6,104.64 is: 8,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.64 : 14,519.20 = 6,104.64 : x
  2. Step 2: Convert to fraction form
    10,520.64/14,519.20 = 6,104.64/x
  3. Step 3: Cross multiply
    10,520.64x = 14,519.20 × 6,104.64
  4. Step 4: Simplify right side
    10,520.64x = 88,634,489.09
  5. Step 5: Solve for x
    x = 88,634,489.09/10,520.64
  6. Step 6: Final answer
    x = 8,424.82

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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.