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Finding the Fourth Proportional to 14,272.96, 19,696.72 and 7,899.99

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Solution

The fourth proportional to 14,272.96, 19,696.72 and 7,899.99 is: 10,902.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,272.96 : 19,696.72 = 7,899.99 : x
  2. Step 2: Convert to fraction form
    14,272.96/19,696.72 = 7,899.99/x
  3. Step 3: Cross multiply
    14,272.96x = 19,696.72 × 7,899.99
  4. Step 4: Simplify right side
    14,272.96x = 155,603,910.78
  5. Step 5: Solve for x
    x = 155,603,910.78/14,272.96
  6. Step 6: Final answer
    x = 10,902.01

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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.