Home / 20,768.08-28,688.88-18,529.24

Finding the Fourth Proportional to 20,768.08, 28,688.88 and 18,529.24

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Solution

The fourth proportional to 20,768.08, 28,688.88 and 18,529.24 is: 25,596.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.08 : 28,688.88 = 18,529.24 : x
  2. Step 2: Convert to fraction form
    20,768.08/28,688.88 = 18,529.24/x
  3. Step 3: Cross multiply
    20,768.08x = 28,688.88 × 18,529.24
  4. Step 4: Simplify right side
    20,768.08x = 531,583,142.85
  5. Step 5: Solve for x
    x = 531,583,142.85/20,768.08
  6. Step 6: Final answer
    x = 25,596.16

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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.