Home / 28,569.22-39,412.44-18,500.90

Finding the Fourth Proportional to 28,569.22, 39,412.44 and 18,500.90

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Solution

The fourth proportional to 28,569.22, 39,412.44 and 18,500.90 is: 25,522.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.22 : 39,412.44 = 18,500.90 : x
  2. Step 2: Convert to fraction form
    28,569.22/39,412.44 = 18,500.90/x
  3. Step 3: Cross multiply
    28,569.22x = 39,412.44 × 18,500.90
  4. Step 4: Simplify right side
    28,569.22x = 729,165,709.73
  5. Step 5: Solve for x
    x = 729,165,709.73/28,569.22
  6. Step 6: Final answer
    x = 25,522.77

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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.