Home / 12,240.15-16,890.13-7,204.06

Finding the Fourth Proportional to 12,240.15, 16,890.13 and 7,204.06

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Solution

The fourth proportional to 12,240.15, 16,890.13 and 7,204.06 is: 9,940.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.15 : 16,890.13 = 7,204.06 : x
  2. Step 2: Convert to fraction form
    12,240.15/16,890.13 = 7,204.06/x
  3. Step 3: Cross multiply
    12,240.15x = 16,890.13 × 7,204.06
  4. Step 4: Simplify right side
    12,240.15x = 121,677,499.52
  5. Step 5: Solve for x
    x = 121,677,499.52/12,240.15
  6. Step 6: Final answer
    x = 9,940.85

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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.