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Finding the Fourth Proportional to 34,687.24, 47,868 and 18,771.40

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Solution

The fourth proportional to 34,687.24, 47,868 and 18,771.40 is: 25,904.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,687.24 : 47,868 = 18,771.40 : x
  2. Step 2: Convert to fraction form
    34,687.24/47,868 = 18,771.40/x
  3. Step 3: Cross multiply
    34,687.24x = 47,868 × 18,771.40
  4. Step 4: Simplify right side
    34,687.24x = 898,549,375.20
  5. Step 5: Solve for x
    x = 898,549,375.20/34,687.24
  6. Step 6: Final answer
    x = 25,904.32

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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.