Home / 12,666.09-17,385.57-12,124.81

Finding the Fourth Proportional to 12,666.09, 17,385.57 and 12,124.81

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Solution

The fourth proportional to 12,666.09, 17,385.57 and 12,124.81 is: 16,642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.09 : 17,385.57 = 12,124.81 : x
  2. Step 2: Convert to fraction form
    12,666.09/17,385.57 = 12,124.81/x
  3. Step 3: Cross multiply
    12,666.09x = 17,385.57 × 12,124.81
  4. Step 4: Simplify right side
    12,666.09x = 210,796,732.99
  5. Step 5: Solve for x
    x = 210,796,732.99/12,666.09
  6. Step 6: Final answer
    x = 16,642.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.