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Finding the Fourth Proportional to 18,814.08, 28,218.96 and 4,964.16

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Solution

The fourth proportional to 18,814.08, 28,218.96 and 4,964.16 is: 7,445.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.08 : 28,218.96 = 4,964.16 : x
  2. Step 2: Convert to fraction form
    18,814.08/28,218.96 = 4,964.16/x
  3. Step 3: Cross multiply
    18,814.08x = 28,218.96 × 4,964.16
  4. Step 4: Simplify right side
    18,814.08x = 140,083,432.47
  5. Step 5: Solve for x
    x = 140,083,432.47/18,814.08
  6. Step 6: Final answer
    x = 7,445.67

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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.