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Finding the Fourth Proportional to 37,425.90, 51,647.80 and 20,658.90

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Solution

The fourth proportional to 37,425.90, 51,647.80 and 20,658.90 is: 28,509.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,425.90 : 51,647.80 = 20,658.90 : x
  2. Step 2: Convert to fraction form
    37,425.90/51,647.80 = 20,658.90/x
  3. Step 3: Cross multiply
    37,425.90x = 51,647.80 × 20,658.90
  4. Step 4: Simplify right side
    37,425.90x = 1,066,986,735.42
  5. Step 5: Solve for x
    x = 1,066,986,735.42/37,425.90
  6. Step 6: Final answer
    x = 28,509.31

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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.