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Finding the Fourth Proportional to 18,704.60, 28,062.74 and 5,557.04

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Solution

The fourth proportional to 18,704.60, 28,062.74 and 5,557.04 is: 8,337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.60 : 28,062.74 = 5,557.04 : x
  2. Step 2: Convert to fraction form
    18,704.60/28,062.74 = 5,557.04/x
  3. Step 3: Cross multiply
    18,704.60x = 28,062.74 × 5,557.04
  4. Step 4: Simplify right side
    18,704.60x = 155,945,768.69
  5. Step 5: Solve for x
    x = 155,945,768.69/18,704.60
  6. Step 6: Final answer
    x = 8,337.30

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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.