Home / 20,587.69-30,876.87-12,270.07

Finding the Fourth Proportional to 20,587.69, 30,876.87 and 12,270.07

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Solution

The fourth proportional to 20,587.69, 30,876.87 and 12,270.07 is: 18,402.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.69 : 30,876.87 = 12,270.07 : x
  2. Step 2: Convert to fraction form
    20,587.69/30,876.87 = 12,270.07/x
  3. Step 3: Cross multiply
    20,587.69x = 30,876.87 × 12,270.07
  4. Step 4: Simplify right side
    20,587.69x = 378,861,201.90
  5. Step 5: Solve for x
    x = 378,861,201.90/20,587.69
  6. Step 6: Final answer
    x = 18,402.32

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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.