Home / 20,208.21-27,877.68-15,701.12

Finding the Fourth Proportional to 20,208.21, 27,877.68 and 15,701.12

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Solution

The fourth proportional to 20,208.21, 27,877.68 and 15,701.12 is: 21,660.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.21 : 27,877.68 = 15,701.12 : x
  2. Step 2: Convert to fraction form
    20,208.21/27,877.68 = 15,701.12/x
  3. Step 3: Cross multiply
    20,208.21x = 27,877.68 × 15,701.12
  4. Step 4: Simplify right side
    20,208.21x = 437,710,705.28
  5. Step 5: Solve for x
    x = 437,710,705.28/20,208.21
  6. Step 6: Final answer
    x = 21,660.04

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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.