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Finding the Fourth Proportional to 37,314.40, 55,971.60 and 13,939.60

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Solution

The fourth proportional to 37,314.40, 55,971.60 and 13,939.60 is: 20,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,314.40 : 55,971.60 = 13,939.60 : x
  2. Step 2: Convert to fraction form
    37,314.40/55,971.60 = 13,939.60/x
  3. Step 3: Cross multiply
    37,314.40x = 55,971.60 × 13,939.60
  4. Step 4: Simplify right side
    37,314.40x = 780,221,715.36
  5. Step 5: Solve for x
    x = 780,221,715.36/37,314.40
  6. Step 6: Final answer
    x = 20,909.40

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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.