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Finding the Fourth Proportional to 30,945.33, 42,701.04 and 17,333.89

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Solution

The fourth proportional to 30,945.33, 42,701.04 and 17,333.89 is: 23,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,945.33 : 42,701.04 = 17,333.89 : x
  2. Step 2: Convert to fraction form
    30,945.33/42,701.04 = 17,333.89/x
  3. Step 3: Cross multiply
    30,945.33x = 42,701.04 × 17,333.89
  4. Step 4: Simplify right side
    30,945.33x = 740,175,023.49
  5. Step 5: Solve for x
    x = 740,175,023.49/30,945.33
  6. Step 6: Final answer
    x = 23,918.80

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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.