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Finding the Fourth Proportional to 37,686.57, 52,004.86 and 20,918.25

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Solution

The fourth proportional to 37,686.57, 52,004.86 and 20,918.25 is: 28,865.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,686.57 : 52,004.86 = 20,918.25 : x
  2. Step 2: Convert to fraction form
    37,686.57/52,004.86 = 20,918.25/x
  3. Step 3: Cross multiply
    37,686.57x = 52,004.86 × 20,918.25
  4. Step 4: Simplify right side
    37,686.57x = 1,087,850,662.70
  5. Step 5: Solve for x
    x = 1,087,850,662.70/37,686.57
  6. Step 6: Final answer
    x = 28,865.74

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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.