Home / 21,023.32-28,982.04-16,539.29

Finding the Fourth Proportional to 21,023.32, 28,982.04 and 16,539.29

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Solution

The fourth proportional to 21,023.32, 28,982.04 and 16,539.29 is: 22,800.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.32 : 28,982.04 = 16,539.29 : x
  2. Step 2: Convert to fraction form
    21,023.32/28,982.04 = 16,539.29/x
  3. Step 3: Cross multiply
    21,023.32x = 28,982.04 × 16,539.29
  4. Step 4: Simplify right side
    21,023.32x = 479,342,136.74
  5. Step 5: Solve for x
    x = 479,342,136.74/21,023.32
  6. Step 6: Final answer
    x = 22,800.50

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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.