Home / 15,991.37-22,068.17-8,821.54

Finding the Fourth Proportional to 15,991.37, 22,068.17 and 8,821.54

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Solution

The fourth proportional to 15,991.37, 22,068.17 and 8,821.54 is: 12,173.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,991.37 : 22,068.17 = 8,821.54 : x
  2. Step 2: Convert to fraction form
    15,991.37/22,068.17 = 8,821.54/x
  3. Step 3: Cross multiply
    15,991.37x = 22,068.17 × 8,821.54
  4. Step 4: Simplify right side
    15,991.37x = 194,675,186.43
  5. Step 5: Solve for x
    x = 194,675,186.43/15,991.37
  6. Step 6: Final answer
    x = 12,173.77

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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.