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Finding the Fourth Proportional to 14,841.21, 20,480.98 and 8,127.46

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Solution

The fourth proportional to 14,841.21, 20,480.98 and 8,127.46 is: 11,215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,841.21 : 20,480.98 = 8,127.46 : x
  2. Step 2: Convert to fraction form
    14,841.21/20,480.98 = 8,127.46/x
  3. Step 3: Cross multiply
    14,841.21x = 20,480.98 × 8,127.46
  4. Step 4: Simplify right side
    14,841.21x = 166,458,345.71
  5. Step 5: Solve for x
    x = 166,458,345.71/14,841.21
  6. Step 6: Final answer
    x = 11,215.96

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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.