Home / 30,538.37-42,128.16-25,169.28

Finding the Fourth Proportional to 30,538.37, 42,128.16 and 25,169.28

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Solution

The fourth proportional to 30,538.37, 42,128.16 and 25,169.28 is: 34,721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,538.37 : 42,128.16 = 25,169.28 : x
  2. Step 2: Convert to fraction form
    30,538.37/42,128.16 = 25,169.28/x
  3. Step 3: Cross multiply
    30,538.37x = 42,128.16 × 25,169.28
  4. Step 4: Simplify right side
    30,538.37x = 1,060,335,454.92
  5. Step 5: Solve for x
    x = 1,060,335,454.92/30,538.37
  6. Step 6: Final answer
    x = 34,721.42

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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.