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Finding the Fourth Proportional to 18,989.52, 28,484.36 and 5,841.81

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Solution

The fourth proportional to 18,989.52, 28,484.36 and 5,841.81 is: 8,762.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.52 : 28,484.36 = 5,841.81 : x
  2. Step 2: Convert to fraction form
    18,989.52/28,484.36 = 5,841.81/x
  3. Step 3: Cross multiply
    18,989.52x = 28,484.36 × 5,841.81
  4. Step 4: Simplify right side
    18,989.52x = 166,400,189.88
  5. Step 5: Solve for x
    x = 166,400,189.88/18,989.52
  6. Step 6: Final answer
    x = 8,762.74

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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.