Home / 47,697.12-71,537.52-12,640.32

Finding the Fourth Proportional to 47,697.12, 71,537.52 and 12,640.32

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Solution

The fourth proportional to 47,697.12, 71,537.52 and 12,640.32 is: 18,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,697.12 : 71,537.52 = 12,640.32 : x
  2. Step 2: Convert to fraction form
    47,697.12/71,537.52 = 12,640.32/x
  3. Step 3: Cross multiply
    47,697.12x = 71,537.52 × 12,640.32
  4. Step 4: Simplify right side
    47,697.12x = 904,257,144.81
  5. Step 5: Solve for x
    x = 904,257,144.81/47,697.12
  6. Step 6: Final answer
    x = 18,958.32

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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.