Home / 28,538.87-39,397.41-18,994.64

Finding the Fourth Proportional to 28,538.87, 39,397.41 and 18,994.64

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Solution

The fourth proportional to 28,538.87, 39,397.41 and 18,994.64 is: 26,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.87 : 39,397.41 = 18,994.64 : x
  2. Step 2: Convert to fraction form
    28,538.87/39,397.41 = 18,994.64/x
  3. Step 3: Cross multiply
    28,538.87x = 39,397.41 × 18,994.64
  4. Step 4: Simplify right side
    28,538.87x = 748,339,422.90
  5. Step 5: Solve for x
    x = 748,339,422.90/28,538.87
  6. Step 6: Final answer
    x = 26,221.77

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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.