Home / 28,961.10-39,967.88-17,628.80

Finding the Fourth Proportional to 28,961.10, 39,967.88 and 17,628.80

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Solution

The fourth proportional to 28,961.10, 39,967.88 and 17,628.80 is: 24,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.10 : 39,967.88 = 17,628.80 : x
  2. Step 2: Convert to fraction form
    28,961.10/39,967.88 = 17,628.80/x
  3. Step 3: Cross multiply
    28,961.10x = 39,967.88 × 17,628.80
  4. Step 4: Simplify right side
    28,961.10x = 704,585,474.96
  5. Step 5: Solve for x
    x = 704,585,474.96/28,961.10
  6. Step 6: Final answer
    x = 24,328.68

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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.