Home / 15,089.04-20,821.16-8,372.92

Finding the Fourth Proportional to 15,089.04, 20,821.16 and 8,372.92

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Solution

The fourth proportional to 15,089.04, 20,821.16 and 8,372.92 is: 11,553.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,089.04 : 20,821.16 = 8,372.92 : x
  2. Step 2: Convert to fraction form
    15,089.04/20,821.16 = 8,372.92/x
  3. Step 3: Cross multiply
    15,089.04x = 20,821.16 × 8,372.92
  4. Step 4: Simplify right side
    15,089.04x = 174,333,906.99
  5. Step 5: Solve for x
    x = 174,333,906.99/15,089.04
  6. Step 6: Final answer
    x = 11,553.68

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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.