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Finding the Fourth Proportional to 33,889, 46,767.36 and 18,985

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Solution

The fourth proportional to 33,889, 46,767.36 and 18,985 is: 26,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,889 : 46,767.36 = 18,985 : x
  2. Step 2: Convert to fraction form
    33,889/46,767.36 = 18,985/x
  3. Step 3: Cross multiply
    33,889x = 46,767.36 × 18,985
  4. Step 4: Simplify right side
    33,889x = 887,878,329.60
  5. Step 5: Solve for x
    x = 887,878,329.60/33,889
  6. Step 6: Final answer
    x = 26,199.60

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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.