Home / 28,380.29-39,164.81-16,450.55

Finding the Fourth Proportional to 28,380.29, 39,164.81 and 16,450.55

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Solution

The fourth proportional to 28,380.29, 39,164.81 and 16,450.55 is: 22,701.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.29 : 39,164.81 = 16,450.55 : x
  2. Step 2: Convert to fraction form
    28,380.29/39,164.81 = 16,450.55/x
  3. Step 3: Cross multiply
    28,380.29x = 39,164.81 × 16,450.55
  4. Step 4: Simplify right side
    28,380.29x = 644,282,417.91
  5. Step 5: Solve for x
    x = 644,282,417.91/28,380.29
  6. Step 6: Final answer
    x = 22,701.76

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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.