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Finding the Fourth Proportional to 15,099.22, 20,837.07 and 8,810.38

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Solution

The fourth proportional to 15,099.22, 20,837.07 and 8,810.38 is: 12,158.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.22 : 20,837.07 = 8,810.38 : x
  2. Step 2: Convert to fraction form
    15,099.22/20,837.07 = 8,810.38/x
  3. Step 3: Cross multiply
    15,099.22x = 20,837.07 × 8,810.38
  4. Step 4: Simplify right side
    15,099.22x = 183,582,356.55
  5. Step 5: Solve for x
    x = 183,582,356.55/15,099.22
  6. Step 6: Final answer
    x = 12,158.40

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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.