Home / 30,239.20-41,702.18-18,905.08

Finding the Fourth Proportional to 30,239.20, 41,702.18 and 18,905.08

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Solution

The fourth proportional to 30,239.20, 41,702.18 and 18,905.08 is: 26,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,239.20 : 41,702.18 = 18,905.08 : x
  2. Step 2: Convert to fraction form
    30,239.20/41,702.18 = 18,905.08/x
  3. Step 3: Cross multiply
    30,239.20x = 41,702.18 × 18,905.08
  4. Step 4: Simplify right side
    30,239.20x = 788,383,049.07
  5. Step 5: Solve for x
    x = 788,383,049.07/30,239.20
  6. Step 6: Final answer
    x = 26,071.56

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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.