Home / 20,384.54-28,104.63-13,201.77

Finding the Fourth Proportional to 20,384.54, 28,104.63 and 13,201.77

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Solution

The fourth proportional to 20,384.54, 28,104.63 and 13,201.77 is: 18,201.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,384.54 : 28,104.63 = 13,201.77 : x
  2. Step 2: Convert to fraction form
    20,384.54/28,104.63 = 13,201.77/x
  3. Step 3: Cross multiply
    20,384.54x = 28,104.63 × 13,201.77
  4. Step 4: Simplify right side
    20,384.54x = 371,030,861.20
  5. Step 5: Solve for x
    x = 371,030,861.20/20,384.54
  6. Step 6: Final answer
    x = 18,201.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.