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Finding the Fourth Proportional to 37,656.21, 51,965.61 and 20,889.21

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Solution

The fourth proportional to 37,656.21, 51,965.61 and 20,889.21 is: 28,827.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,656.21 : 51,965.61 = 20,889.21 : x
  2. Step 2: Convert to fraction form
    37,656.21/51,965.61 = 20,889.21/x
  3. Step 3: Cross multiply
    37,656.21x = 51,965.61 × 20,889.21
  4. Step 4: Simplify right side
    37,656.21x = 1,085,520,540.07
  5. Step 5: Solve for x
    x = 1,085,520,540.07/37,656.21
  6. Step 6: Final answer
    x = 28,827.13

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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.