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Finding the Fourth Proportional to 19,325.51, 28,999.20 and 8,231.04

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Solution

The fourth proportional to 19,325.51, 28,999.20 and 8,231.04 is: 12,351.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.51 : 28,999.20 = 8,231.04 : x
  2. Step 2: Convert to fraction form
    19,325.51/28,999.20 = 8,231.04/x
  3. Step 3: Cross multiply
    19,325.51x = 28,999.20 × 8,231.04
  4. Step 4: Simplify right side
    19,325.51x = 238,693,575.17
  5. Step 5: Solve for x
    x = 238,693,575.17/19,325.51
  6. Step 6: Final answer
    x = 12,351.22

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1.5x scale

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.