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Finding the Fourth Proportional to 15,620.74, 23,436.78 and 6,858.16

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Solution

The fourth proportional to 15,620.74, 23,436.78 and 6,858.16 is: 10,289.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.74 : 23,436.78 = 6,858.16 : x
  2. Step 2: Convert to fraction form
    15,620.74/23,436.78 = 6,858.16/x
  3. Step 3: Cross multiply
    15,620.74x = 23,436.78 × 6,858.16
  4. Step 4: Simplify right side
    15,620.74x = 160,733,187.12
  5. Step 5: Solve for x
    x = 160,733,187.12/15,620.74
  6. Step 6: Final answer
    x = 10,289.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.