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Finding the Fourth Proportional to 23,868.30, 35,840.70 and 18,978.60

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Solution

The fourth proportional to 23,868.30, 35,840.70 and 18,978.60 is: 28,498.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,868.30 : 35,840.70 = 18,978.60 : x
  2. Step 2: Convert to fraction form
    23,868.30/35,840.70 = 18,978.60/x
  3. Step 3: Cross multiply
    23,868.30x = 35,840.70 × 18,978.60
  4. Step 4: Simplify right side
    23,868.30x = 680,206,309.02
  5. Step 5: Solve for x
    x = 680,206,309.02/23,868.30
  6. Step 6: Final answer
    x = 28,498.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.