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Finding the Fourth Proportional to 27,336.60, 40,907.70 and 18,977.40

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Solution

The fourth proportional to 27,336.60, 40,907.70 and 18,977.40 is: 28,398.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,336.60 : 40,907.70 = 18,977.40 : x
  2. Step 2: Convert to fraction form
    27,336.60/40,907.70 = 18,977.40/x
  3. Step 3: Cross multiply
    27,336.60x = 40,907.70 × 18,977.40
  4. Step 4: Simplify right side
    27,336.60x = 776,321,785.98
  5. Step 5: Solve for x
    x = 776,321,785.98/27,336.60
  6. Step 6: Final answer
    x = 28,398.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.