Home / 19,909.67-29,855.16-13,670.64

Finding the Fourth Proportional to 19,909.67, 29,855.16 and 13,670.64

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Solution

The fourth proportional to 19,909.67, 29,855.16 and 13,670.64 is: 20,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.67 : 29,855.16 = 13,670.64 : x
  2. Step 2: Convert to fraction form
    19,909.67/29,855.16 = 13,670.64/x
  3. Step 3: Cross multiply
    19,909.67x = 29,855.16 × 13,670.64
  4. Step 4: Simplify right side
    19,909.67x = 408,139,144.50
  5. Step 5: Solve for x
    x = 408,139,144.50/19,909.67
  6. Step 6: Final answer
    x = 20,499.55

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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.