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Finding the Fourth Proportional to 14,287.67, 19,835.75 and 13,859.99

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Solution

The fourth proportional to 14,287.67, 19,835.75 and 13,859.99 is: 19,241.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,287.67 : 19,835.75 = 13,859.99 : x
  2. Step 2: Convert to fraction form
    14,287.67/19,835.75 = 13,859.99/x
  3. Step 3: Cross multiply
    14,287.67x = 19,835.75 × 13,859.99
  4. Step 4: Simplify right side
    14,287.67x = 274,923,128.16
  5. Step 5: Solve for x
    x = 274,923,128.16/14,287.67
  6. Step 6: Final answer
    x = 19,241.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.