Home / 20,942.56-28,870.32-14,635.36

Finding the Fourth Proportional to 20,942.56, 28,870.32 and 14,635.36

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Solution

The fourth proportional to 20,942.56, 28,870.32 and 14,635.36 is: 20,175.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.56 : 28,870.32 = 14,635.36 : x
  2. Step 2: Convert to fraction form
    20,942.56/28,870.32 = 14,635.36/x
  3. Step 3: Cross multiply
    20,942.56x = 28,870.32 × 14,635.36
  4. Step 4: Simplify right side
    20,942.56x = 422,527,526.52
  5. Step 5: Solve for x
    x = 422,527,526.52/20,942.56
  6. Step 6: Final answer
    x = 20,175.54

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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.