Home / 20,208.96-27,875.68-13,910.40

Finding the Fourth Proportional to 20,208.96, 27,875.68 and 13,910.40

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Solution

The fourth proportional to 20,208.96, 27,875.68 and 13,910.40 is: 19,187.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.96 : 27,875.68 = 13,910.40 : x
  2. Step 2: Convert to fraction form
    20,208.96/27,875.68 = 13,910.40/x
  3. Step 3: Cross multiply
    20,208.96x = 27,875.68 × 13,910.40
  4. Step 4: Simplify right side
    20,208.96x = 387,761,859.07
  5. Step 5: Solve for x
    x = 387,761,859.07/20,208.96
  6. Step 6: Final answer
    x = 19,187.62

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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.