Home / 30,709.52-42,375.87-17,280.54

Finding the Fourth Proportional to 30,709.52, 42,375.87 and 17,280.54

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Solution

The fourth proportional to 30,709.52, 42,375.87 and 17,280.54 is: 23,845.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,709.52 : 42,375.87 = 17,280.54 : x
  2. Step 2: Convert to fraction form
    30,709.52/42,375.87 = 17,280.54/x
  3. Step 3: Cross multiply
    30,709.52x = 42,375.87 × 17,280.54
  4. Step 4: Simplify right side
    30,709.52x = 732,277,916.57
  5. Step 5: Solve for x
    x = 732,277,916.57/30,709.52
  6. Step 6: Final answer
    x = 23,845.31

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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.