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Finding the Fourth Proportional to 34,720.47, 47,914.20 and 18,804.78

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Solution

The fourth proportional to 34,720.47, 47,914.20 and 18,804.78 is: 25,950.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,720.47 : 47,914.20 = 18,804.78 : x
  2. Step 2: Convert to fraction form
    34,720.47/47,914.20 = 18,804.78/x
  3. Step 3: Cross multiply
    34,720.47x = 47,914.20 × 18,804.78
  4. Step 4: Simplify right side
    34,720.47x = 901,015,989.88
  5. Step 5: Solve for x
    x = 901,015,989.88/34,720.47
  6. Step 6: Final answer
    x = 25,950.57

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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.