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Finding the Fourth Proportional to 30,388.32, 41,932.08 and 19,208.16

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Solution

The fourth proportional to 30,388.32, 41,932.08 and 19,208.16 is: 26,504.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,388.32 : 41,932.08 = 19,208.16 : x
  2. Step 2: Convert to fraction form
    30,388.32/41,932.08 = 19,208.16/x
  3. Step 3: Cross multiply
    30,388.32x = 41,932.08 × 19,208.16
  4. Step 4: Simplify right side
    30,388.32x = 805,438,101.77
  5. Step 5: Solve for x
    x = 805,438,101.77/30,388.32
  6. Step 6: Final answer
    x = 26,504.86

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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.