Home / 20,561.37-28,375.23-12,492.28

Finding the Fourth Proportional to 20,561.37, 28,375.23 and 12,492.28

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Solution

The fourth proportional to 20,561.37, 28,375.23 and 12,492.28 is: 17,239.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.37 : 28,375.23 = 12,492.28 : x
  2. Step 2: Convert to fraction form
    20,561.37/28,375.23 = 12,492.28/x
  3. Step 3: Cross multiply
    20,561.37x = 28,375.23 × 12,492.28
  4. Step 4: Simplify right side
    20,561.37x = 354,471,318.22
  5. Step 5: Solve for x
    x = 354,471,318.22/20,561.37
  6. Step 6: Final answer
    x = 17,239.67

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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.