Home / 34,662.40-47,825.76-20,518.72

Finding the Fourth Proportional to 34,662.40, 47,825.76 and 20,518.72

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Solution

The fourth proportional to 34,662.40, 47,825.76 and 20,518.72 is: 28,310.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,662.40 : 47,825.76 = 20,518.72 : x
  2. Step 2: Convert to fraction form
    34,662.40/47,825.76 = 20,518.72/x
  3. Step 3: Cross multiply
    34,662.40x = 47,825.76 × 20,518.72
  4. Step 4: Simplify right side
    34,662.40x = 981,323,378.23
  5. Step 5: Solve for x
    x = 981,323,378.23/34,662.40
  6. Step 6: Final answer
    x = 28,310.89

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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.