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Finding the Fourth Proportional to 23,970.60, 35,912.70 and 21,205.80

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Solution

The fourth proportional to 23,970.60, 35,912.70 and 21,205.80 is: 31,770.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,970.60 : 35,912.70 = 21,205.80 : x
  2. Step 2: Convert to fraction form
    23,970.60/35,912.70 = 21,205.80/x
  3. Step 3: Cross multiply
    23,970.60x = 35,912.70 × 21,205.80
  4. Step 4: Simplify right side
    23,970.60x = 761,557,533.66
  5. Step 5: Solve for x
    x = 761,557,533.66/23,970.60
  6. Step 6: Final answer
    x = 31,770.48

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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.