Home / 28,487.96-39,321.04-16,389.83

Finding the Fourth Proportional to 28,487.96, 39,321.04 and 16,389.83

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Solution

The fourth proportional to 28,487.96, 39,321.04 and 16,389.83 is: 22,622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.96 : 39,321.04 = 16,389.83 : x
  2. Step 2: Convert to fraction form
    28,487.96/39,321.04 = 16,389.83/x
  3. Step 3: Cross multiply
    28,487.96x = 39,321.04 × 16,389.83
  4. Step 4: Simplify right side
    28,487.96x = 644,464,964.42
  5. Step 5: Solve for x
    x = 644,464,964.42/28,487.96
  6. Step 6: Final answer
    x = 22,622.36

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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.