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Finding the Fourth Proportional to 37,907.30, 52,310.94 and 21,140.30

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Solution

The fourth proportional to 37,907.30, 52,310.94 and 21,140.30 is: 29,172.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,907.30 : 52,310.94 = 21,140.30 : x
  2. Step 2: Convert to fraction form
    37,907.30/52,310.94 = 21,140.30/x
  3. Step 3: Cross multiply
    37,907.30x = 52,310.94 × 21,140.30
  4. Step 4: Simplify right side
    37,907.30x = 1,105,868,964.88
  5. Step 5: Solve for x
    x = 1,105,868,964.88/37,907.30
  6. Step 6: Final answer
    x = 29,172.98

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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.