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Finding the Fourth Proportional to 18,818.08, 28,224.96 and 4,968.16

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Solution

The fourth proportional to 18,818.08, 28,224.96 and 4,968.16 is: 7,451.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.08 : 28,224.96 = 4,968.16 : x
  2. Step 2: Convert to fraction form
    18,818.08/28,224.96 = 4,968.16/x
  3. Step 3: Cross multiply
    18,818.08x = 28,224.96 × 4,968.16
  4. Step 4: Simplify right side
    18,818.08x = 140,226,117.27
  5. Step 5: Solve for x
    x = 140,226,117.27/18,818.08
  6. Step 6: Final answer
    x = 7,451.67

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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.