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Finding the Fourth Proportional to 15,051.65, 20,768.20 and 8,336.81

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Solution

The fourth proportional to 15,051.65, 20,768.20 and 8,336.81 is: 11,503.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.65 : 20,768.20 = 8,336.81 : x
  2. Step 2: Convert to fraction form
    15,051.65/20,768.20 = 8,336.81/x
  3. Step 3: Cross multiply
    15,051.65x = 20,768.20 × 8,336.81
  4. Step 4: Simplify right side
    15,051.65x = 173,140,568.52
  5. Step 5: Solve for x
    x = 173,140,568.52/15,051.65
  6. Step 6: Final answer
    x = 11,503.10

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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.