Home / 20,190.70-27,864.67-11,695.10

Finding the Fourth Proportional to 20,190.70, 27,864.67 and 11,695.10

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Solution

The fourth proportional to 20,190.70, 27,864.67 and 11,695.10 is: 16,140.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.70 : 27,864.67 = 11,695.10 : x
  2. Step 2: Convert to fraction form
    20,190.70/27,864.67 = 11,695.10/x
  3. Step 3: Cross multiply
    20,190.70x = 27,864.67 × 11,695.10
  4. Step 4: Simplify right side
    20,190.70x = 325,880,102.12
  5. Step 5: Solve for x
    x = 325,880,102.12/20,190.70
  6. Step 6: Final answer
    x = 16,140.11

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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.