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Finding the Fourth Proportional to 37,656, 51,965.28 and 20,889.12

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Solution

The fourth proportional to 37,656, 51,965.28 and 20,889.12 is: 28,826.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,656 : 51,965.28 = 20,889.12 : x
  2. Step 2: Convert to fraction form
    37,656/51,965.28 = 20,889.12/x
  3. Step 3: Cross multiply
    37,656x = 51,965.28 × 20,889.12
  4. Step 4: Simplify right side
    37,656x = 1,085,508,969.75
  5. Step 5: Solve for x
    x = 1,085,508,969.75/37,656
  6. Step 6: Final answer
    x = 28,826.99

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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.