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Finding the Fourth Proportional to 15,841.53, 21,861.63 and 8,768.07

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Solution

The fourth proportional to 15,841.53, 21,861.63 and 8,768.07 is: 12,100.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.53 : 21,861.63 = 8,768.07 : x
  2. Step 2: Convert to fraction form
    15,841.53/21,861.63 = 8,768.07/x
  3. Step 3: Cross multiply
    15,841.53x = 21,861.63 × 8,768.07
  4. Step 4: Simplify right side
    15,841.53x = 191,684,302.15
  5. Step 5: Solve for x
    x = 191,684,302.15/15,841.53
  6. Step 6: Final answer
    x = 12,100.11

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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.