Home / 15,841.80-21,861.60-8,768.10

Finding the Fourth Proportional to 15,841.80, 21,861.60 and 8,768.10

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Solution

The fourth proportional to 15,841.80, 21,861.60 and 8,768.10 is: 12,099.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.80 : 21,861.60 = 8,768.10 : x
  2. Step 2: Convert to fraction form
    15,841.80/21,861.60 = 8,768.10/x
  3. Step 3: Cross multiply
    15,841.80x = 21,861.60 × 8,768.10
  4. Step 4: Simplify right side
    15,841.80x = 191,684,694.96
  5. Step 5: Solve for x
    x = 191,684,694.96/15,841.80
  6. Step 6: Final answer
    x = 12,099.93

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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.