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Finding the Fourth Proportional to 18,700.67, 25,795.45 and 12,735.02

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Solution

The fourth proportional to 18,700.67, 25,795.45 and 12,735.02 is: 17,566.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700.67 : 25,795.45 = 12,735.02 : x
  2. Step 2: Convert to fraction form
    18,700.67/25,795.45 = 12,735.02/x
  3. Step 3: Cross multiply
    18,700.67x = 25,795.45 × 12,735.02
  4. Step 4: Simplify right side
    18,700.67x = 328,505,571.66
  5. Step 5: Solve for x
    x = 328,505,571.66/18,700.67
  6. Step 6: Final answer
    x = 17,566.51

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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.