Home / 12,655.36-18,983.04-3,890.16

Finding the Fourth Proportional to 12,655.36, 18,983.04 and 3,890.16

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Solution

The fourth proportional to 12,655.36, 18,983.04 and 3,890.16 is: 5,835.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.36 : 18,983.04 = 3,890.16 : x
  2. Step 2: Convert to fraction form
    12,655.36/18,983.04 = 3,890.16/x
  3. Step 3: Cross multiply
    12,655.36x = 18,983.04 × 3,890.16
  4. Step 4: Simplify right side
    12,655.36x = 73,847,062.89
  5. Step 5: Solve for x
    x = 73,847,062.89/12,655.36
  6. Step 6: Final answer
    x = 5,835.24

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.