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Finding the Fourth Proportional to 12,124.10, 16,731.09 and 6,818.92

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Solution

The fourth proportional to 12,124.10, 16,731.09 and 6,818.92 is: 9,410.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.10 : 16,731.09 = 6,818.92 : x
  2. Step 2: Convert to fraction form
    12,124.10/16,731.09 = 6,818.92/x
  3. Step 3: Cross multiply
    12,124.10x = 16,731.09 × 6,818.92
  4. Step 4: Simplify right side
    12,124.10x = 114,087,922.40
  5. Step 5: Solve for x
    x = 114,087,922.40/12,124.10
  6. Step 6: Final answer
    x = 9,410.01

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Half scale
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Double scale
Find fourth proportional to 12,125.10, 16,732.47 and 6,819.92
Similar ratio
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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.