Home / 30,645.48-42,295.68-28,644.37

Finding the Fourth Proportional to 30,645.48, 42,295.68 and 28,644.37

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Solution

The fourth proportional to 30,645.48, 42,295.68 and 28,644.37 is: 39,533.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.48 : 42,295.68 = 28,644.37 : x
  2. Step 2: Convert to fraction form
    30,645.48/42,295.68 = 28,644.37/x
  3. Step 3: Cross multiply
    30,645.48x = 42,295.68 × 28,644.37
  4. Step 4: Simplify right side
    30,645.48x = 1,211,533,107.32
  5. Step 5: Solve for x
    x = 1,211,533,107.32/30,645.48
  6. Step 6: Final answer
    x = 39,533.83

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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.