Home / 37,415.57-51,634.55-20,420.90

Finding the Fourth Proportional to 37,415.57, 51,634.55 and 20,420.90

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Solution

The fourth proportional to 37,415.57, 51,634.55 and 20,420.90 is: 28,181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,415.57 : 51,634.55 = 20,420.90 : x
  2. Step 2: Convert to fraction form
    37,415.57/51,634.55 = 20,420.90/x
  3. Step 3: Cross multiply
    37,415.57x = 51,634.55 × 20,420.90
  4. Step 4: Simplify right side
    37,415.57x = 1,054,423,774.97
  5. Step 5: Solve for x
    x = 1,054,423,774.97/37,415.57
  6. Step 6: Final answer
    x = 28,181.42

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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.