Home / 20,208.81-27,889.47-13,910.25

Finding the Fourth Proportional to 20,208.81, 27,889.47 and 13,910.25

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Solution

The fourth proportional to 20,208.81, 27,889.47 and 13,910.25 is: 19,197.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.81 : 27,889.47 = 13,910.25 : x
  2. Step 2: Convert to fraction form
    20,208.81/27,889.47 = 13,910.25/x
  3. Step 3: Cross multiply
    20,208.81x = 27,889.47 × 13,910.25
  4. Step 4: Simplify right side
    20,208.81x = 387,949,500.07
  5. Step 5: Solve for x
    x = 387,949,500.07/20,208.81
  6. Step 6: Final answer
    x = 19,197.05

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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.