Home / 12,855.55-19,301.17-6,620.02

Finding the Fourth Proportional to 12,855.55, 19,301.17 and 6,620.02

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Solution

The fourth proportional to 12,855.55, 19,301.17 and 6,620.02 is: 9,939.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.55 : 19,301.17 = 6,620.02 : x
  2. Step 2: Convert to fraction form
    12,855.55/19,301.17 = 6,620.02/x
  3. Step 3: Cross multiply
    12,855.55x = 19,301.17 × 6,620.02
  4. Step 4: Simplify right side
    12,855.55x = 127,774,131.42
  5. Step 5: Solve for x
    x = 127,774,131.42/12,855.55
  6. Step 6: Final answer
    x = 9,939.22

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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.