Home / 20,737.72-28,633.74-13,674.04

Finding the Fourth Proportional to 20,737.72, 28,633.74 and 13,674.04

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Solution

The fourth proportional to 20,737.72, 28,633.74 and 13,674.04 is: 18,880.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.72 : 28,633.74 = 13,674.04 : x
  2. Step 2: Convert to fraction form
    20,737.72/28,633.74 = 13,674.04/x
  3. Step 3: Cross multiply
    20,737.72x = 28,633.74 × 13,674.04
  4. Step 4: Simplify right side
    20,737.72x = 391,538,906.11
  5. Step 5: Solve for x
    x = 391,538,906.11/20,737.72
  6. Step 6: Final answer
    x = 18,880.52

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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.