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Finding the Fourth Proportional to 37,420.42, 51,640.11 and 20,653.42

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Solution

The fourth proportional to 37,420.42, 51,640.11 and 20,653.42 is: 28,501.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,420.42 : 51,640.11 = 20,653.42 : x
  2. Step 2: Convert to fraction form
    37,420.42/51,640.11 = 20,653.42/x
  3. Step 3: Cross multiply
    37,420.42x = 51,640.11 × 20,653.42
  4. Step 4: Simplify right side
    37,420.42x = 1,066,544,880.68
  5. Step 5: Solve for x
    x = 1,066,544,880.68/37,420.42
  6. Step 6: Final answer
    x = 28,501.68

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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.