Home / 20,077.37-27,719.76-12,910.50

Finding the Fourth Proportional to 20,077.37, 27,719.76 and 12,910.50

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Solution

The fourth proportional to 20,077.37, 27,719.76 and 12,910.50 is: 17,824.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.37 : 27,719.76 = 12,910.50 : x
  2. Step 2: Convert to fraction form
    20,077.37/27,719.76 = 12,910.50/x
  3. Step 3: Cross multiply
    20,077.37x = 27,719.76 × 12,910.50
  4. Step 4: Simplify right side
    20,077.37x = 357,875,961.48
  5. Step 5: Solve for x
    x = 357,875,961.48/20,077.37
  6. Step 6: Final answer
    x = 17,824.85

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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.