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Finding the Fourth Proportional to 37,685.49, 52,005.98 and 20,918.49

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Solution

The fourth proportional to 37,685.49, 52,005.98 and 20,918.49 is: 28,867.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,685.49 : 52,005.98 = 20,918.49 : x
  2. Step 2: Convert to fraction form
    37,685.49/52,005.98 = 20,918.49/x
  3. Step 3: Cross multiply
    37,685.49x = 52,005.98 × 20,918.49
  4. Step 4: Simplify right side
    37,685.49x = 1,087,886,467.98
  5. Step 5: Solve for x
    x = 1,087,886,467.98/37,685.49
  6. Step 6: Final answer
    x = 28,867.52

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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.