Home / 12,163.08-16,785.15-7,127.45

Finding the Fourth Proportional to 12,163.08, 16,785.15 and 7,127.45

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Solution

The fourth proportional to 12,163.08, 16,785.15 and 7,127.45 is: 9,835.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.08 : 16,785.15 = 7,127.45 : x
  2. Step 2: Convert to fraction form
    12,163.08/16,785.15 = 7,127.45/x
  3. Step 3: Cross multiply
    12,163.08x = 16,785.15 × 7,127.45
  4. Step 4: Simplify right side
    12,163.08x = 119,635,317.37
  5. Step 5: Solve for x
    x = 119,635,317.37/12,163.08
  6. Step 6: Final answer
    x = 9,835.94

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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.