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Finding the Fourth Proportional to 13,357.21, 20,034.78 and 5,457.62

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Solution

The fourth proportional to 13,357.21, 20,034.78 and 5,457.62 is: 8,186.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.21 : 20,034.78 = 5,457.62 : x
  2. Step 2: Convert to fraction form
    13,357.21/20,034.78 = 5,457.62/x
  3. Step 3: Cross multiply
    13,357.21x = 20,034.78 × 5,457.62
  4. Step 4: Simplify right side
    13,357.21x = 109,342,216.02
  5. Step 5: Solve for x
    x = 109,342,216.02/13,357.21
  6. Step 6: Final answer
    x = 8,186.01

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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.