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Finding the Fourth Proportional to 27,281.60, 40,960.80 and 16,913.60

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Solution

The fourth proportional to 27,281.60, 40,960.80 and 16,913.60 is: 25,394.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,281.60 : 40,960.80 = 16,913.60 : x
  2. Step 2: Convert to fraction form
    27,281.60/40,960.80 = 16,913.60/x
  3. Step 3: Cross multiply
    27,281.60x = 40,960.80 × 16,913.60
  4. Step 4: Simplify right side
    27,281.60x = 692,794,586.88
  5. Step 5: Solve for x
    x = 692,794,586.88/27,281.60
  6. Step 6: Final answer
    x = 25,394.21

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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.