Home / 42,172.76-63,270.09-12,590.60

Finding the Fourth Proportional to 42,172.76, 63,270.09 and 12,590.60

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Solution

The fourth proportional to 42,172.76, 63,270.09 and 12,590.60 is: 18,889.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,172.76 : 63,270.09 = 12,590.60 : x
  2. Step 2: Convert to fraction form
    42,172.76/63,270.09 = 12,590.60/x
  3. Step 3: Cross multiply
    42,172.76x = 63,270.09 × 12,590.60
  4. Step 4: Simplify right side
    42,172.76x = 796,608,078.80
  5. Step 5: Solve for x
    x = 796,608,078.80/42,172.76
  6. Step 6: Final answer
    x = 18,889.16

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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.