Home / 20,177.76-27,840.96-12,220.32

Finding the Fourth Proportional to 20,177.76, 27,840.96 and 12,220.32

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Solution

The fourth proportional to 20,177.76, 27,840.96 and 12,220.32 is: 16,861.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.76 : 27,840.96 = 12,220.32 : x
  2. Step 2: Convert to fraction form
    20,177.76/27,840.96 = 12,220.32/x
  3. Step 3: Cross multiply
    20,177.76x = 27,840.96 × 12,220.32
  4. Step 4: Simplify right side
    20,177.76x = 340,225,440.31
  5. Step 5: Solve for x
    x = 340,225,440.31/20,177.76
  6. Step 6: Final answer
    x = 16,861.41

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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.