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Finding the Fourth Proportional to 18,697.30, 28,037.75 and 7,002.32

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Solution

The fourth proportional to 18,697.30, 28,037.75 and 7,002.32 is: 10,500.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.30 : 28,037.75 = 7,002.32 : x
  2. Step 2: Convert to fraction form
    18,697.30/28,037.75 = 7,002.32/x
  3. Step 3: Cross multiply
    18,697.30x = 28,037.75 × 7,002.32
  4. Step 4: Simplify right side
    18,697.30x = 196,329,122.38
  5. Step 5: Solve for x
    x = 196,329,122.38/18,697.30
  6. Step 6: Final answer
    x = 10,500.40

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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.