Home / 20,428.56-28,192.32-12,045.24

Finding the Fourth Proportional to 20,428.56, 28,192.32 and 12,045.24

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Solution

The fourth proportional to 20,428.56, 28,192.32 and 12,045.24 is: 16,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.56 : 28,192.32 = 12,045.24 : x
  2. Step 2: Convert to fraction form
    20,428.56/28,192.32 = 12,045.24/x
  3. Step 3: Cross multiply
    20,428.56x = 28,192.32 × 12,045.24
  4. Step 4: Simplify right side
    20,428.56x = 339,583,260.56
  5. Step 5: Solve for x
    x = 339,583,260.56/20,428.56
  6. Step 6: Final answer
    x = 16,622.97

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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.