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Finding the Fourth Proportional to 14,469.83, 19,987.11 and 9,985.67

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Solution

The fourth proportional to 14,469.83, 19,987.11 and 9,985.67 is: 13,793.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,469.83 : 19,987.11 = 9,985.67 : x
  2. Step 2: Convert to fraction form
    14,469.83/19,987.11 = 9,985.67/x
  3. Step 3: Cross multiply
    14,469.83x = 19,987.11 × 9,985.67
  4. Step 4: Simplify right side
    14,469.83x = 199,584,584.78
  5. Step 5: Solve for x
    x = 199,584,584.78/14,469.83
  6. Step 6: Final answer
    x = 13,793.16

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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.