Home / 12,124.10-16,731.10-6,819.81

Finding the Fourth Proportional to 12,124.10, 16,731.10 and 6,819.81

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Solution

The fourth proportional to 12,124.10, 16,731.10 and 6,819.81 is: 9,411.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.10 : 16,731.10 = 6,819.81 : x
  2. Step 2: Convert to fraction form
    12,124.10/16,731.10 = 6,819.81/x
  3. Step 3: Cross multiply
    12,124.10x = 16,731.10 × 6,819.81
  4. Step 4: Simplify right side
    12,124.10x = 114,102,923.09
  5. Step 5: Solve for x
    x = 114,102,923.09/12,124.10
  6. Step 6: Final answer
    x = 9,411.25

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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.