Home / 28,942.10-43,427.22-13,157.43

Finding the Fourth Proportional to 28,942.10, 43,427.22 and 13,157.43

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Solution

The fourth proportional to 28,942.10, 43,427.22 and 13,157.43 is: 19,742.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942.10 : 43,427.22 = 13,157.43 : x
  2. Step 2: Convert to fraction form
    28,942.10/43,427.22 = 13,157.43/x
  3. Step 3: Cross multiply
    28,942.10x = 43,427.22 × 13,157.43
  4. Step 4: Simplify right side
    28,942.10x = 571,390,607.24
  5. Step 5: Solve for x
    x = 571,390,607.24/28,942.10
  6. Step 6: Final answer
    x = 19,742.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.