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Finding the Fourth Proportional to 37,286.40, 55,929.60 and 13,911.60

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Solution

The fourth proportional to 37,286.40, 55,929.60 and 13,911.60 is: 20,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,286.40 : 55,929.60 = 13,911.60 : x
  2. Step 2: Convert to fraction form
    37,286.40/55,929.60 = 13,911.60/x
  3. Step 3: Cross multiply
    37,286.40x = 55,929.60 × 13,911.60
  4. Step 4: Simplify right side
    37,286.40x = 778,070,223.36
  5. Step 5: Solve for x
    x = 778,070,223.36/37,286.40
  6. Step 6: Final answer
    x = 20,867.40

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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.