Home / 28,760.78-43,138.34-9,038.81

Finding the Fourth Proportional to 28,760.78, 43,138.34 and 9,038.81

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Solution

The fourth proportional to 28,760.78, 43,138.34 and 9,038.81 is: 13,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,760.78 : 43,138.34 = 9,038.81 : x
  2. Step 2: Convert to fraction form
    28,760.78/43,138.34 = 9,038.81/x
  3. Step 3: Cross multiply
    28,760.78x = 43,138.34 × 9,038.81
  4. Step 4: Simplify right side
    28,760.78x = 389,919,213.78
  5. Step 5: Solve for x
    x = 389,919,213.78/28,760.78
  6. Step 6: Final answer
    x = 13,557.32

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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.