Home / 30,710.52-42,391.46-18,135.32

Finding the Fourth Proportional to 30,710.52, 42,391.46 and 18,135.32

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Solution

The fourth proportional to 30,710.52, 42,391.46 and 18,135.32 is: 25,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,710.52 : 42,391.46 = 18,135.32 : x
  2. Step 2: Convert to fraction form
    30,710.52/42,391.46 = 18,135.32/x
  3. Step 3: Cross multiply
    30,710.52x = 42,391.46 × 18,135.32
  4. Step 4: Simplify right side
    30,710.52x = 768,782,692.37
  5. Step 5: Solve for x
    x = 768,782,692.37/30,710.52
  6. Step 6: Final answer
    x = 25,033.20

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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.