Home / 12,190.08-16,822.40-6,601.12

Finding the Fourth Proportional to 12,190.08, 16,822.40 and 6,601.12

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Solution

The fourth proportional to 12,190.08, 16,822.40 and 6,601.12 is: 9,109.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.08 : 16,822.40 = 6,601.12 : x
  2. Step 2: Convert to fraction form
    12,190.08/16,822.40 = 6,601.12/x
  3. Step 3: Cross multiply
    12,190.08x = 16,822.40 × 6,601.12
  4. Step 4: Simplify right side
    12,190.08x = 111,046,681.09
  5. Step 5: Solve for x
    x = 111,046,681.09/12,190.08
  6. Step 6: Final answer
    x = 9,109.59

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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.