Home / 12,140.80-16,754.44-7,103.92

Finding the Fourth Proportional to 12,140.80, 16,754.44 and 7,103.92

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Solution

The fourth proportional to 12,140.80, 16,754.44 and 7,103.92 is: 9,803.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.80 : 16,754.44 = 7,103.92 : x
  2. Step 2: Convert to fraction form
    12,140.80/16,754.44 = 7,103.92/x
  3. Step 3: Cross multiply
    12,140.80x = 16,754.44 × 7,103.92
  4. Step 4: Simplify right side
    12,140.80x = 119,022,201.40
  5. Step 5: Solve for x
    x = 119,022,201.40/12,140.80
  6. Step 6: Final answer
    x = 9,803.49

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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.