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Finding the Fourth Proportional to 34,659.99, 47,815.35 and 20,504.63

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Solution

The fourth proportional to 34,659.99, 47,815.35 and 20,504.63 is: 28,287.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,659.99 : 47,815.35 = 20,504.63 : x
  2. Step 2: Convert to fraction form
    34,659.99/47,815.35 = 20,504.63/x
  3. Step 3: Cross multiply
    34,659.99x = 47,815.35 × 20,504.63
  4. Step 4: Simplify right side
    34,659.99x = 980,435,820.99
  5. Step 5: Solve for x
    x = 980,435,820.99/34,659.99
  6. Step 6: Final answer
    x = 28,287.25

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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.