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Finding the Fourth Proportional to 37,707.20, 52,038.25 and 20,940.20

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Solution

The fourth proportional to 37,707.20, 52,038.25 and 20,940.20 is: 28,898.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,707.20 : 52,038.25 = 20,940.20 : x
  2. Step 2: Convert to fraction form
    37,707.20/52,038.25 = 20,940.20/x
  3. Step 3: Cross multiply
    37,707.20x = 52,038.25 × 20,940.20
  4. Step 4: Simplify right side
    37,707.20x = 1,089,691,362.65
  5. Step 5: Solve for x
    x = 1,089,691,362.65/37,707.20
  6. Step 6: Final answer
    x = 28,898.76

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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.