Home / 27,982.87-38,603.88-18,905.32

Finding the Fourth Proportional to 27,982.87, 38,603.88 and 18,905.32

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Solution

The fourth proportional to 27,982.87, 38,603.88 and 18,905.32 is: 26,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,982.87 : 38,603.88 = 18,905.32 : x
  2. Step 2: Convert to fraction form
    27,982.87/38,603.88 = 18,905.32/x
  3. Step 3: Cross multiply
    27,982.87x = 38,603.88 × 18,905.32
  4. Step 4: Simplify right side
    27,982.87x = 729,818,535.75
  5. Step 5: Solve for x
    x = 729,818,535.75/27,982.87
  6. Step 6: Final answer
    x = 26,080.90

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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.