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Finding the Fourth Proportional to 18,975.01, 28,457.54 and 5,644.42

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Solution

The fourth proportional to 18,975.01, 28,457.54 and 5,644.42 is: 8,465.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.01 : 28,457.54 = 5,644.42 : x
  2. Step 2: Convert to fraction form
    18,975.01/28,457.54 = 5,644.42/x
  3. Step 3: Cross multiply
    18,975.01x = 28,457.54 × 5,644.42
  4. Step 4: Simplify right side
    18,975.01x = 160,626,213.85
  5. Step 5: Solve for x
    x = 160,626,213.85/18,975.01
  6. Step 6: Final answer
    x = 8,465.15

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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.