Home / 30,988.98-42,765.03-16,841.79

Finding the Fourth Proportional to 30,988.98, 42,765.03 and 16,841.79

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Solution

The fourth proportional to 30,988.98, 42,765.03 and 16,841.79 is: 23,241.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,988.98 : 42,765.03 = 16,841.79 : x
  2. Step 2: Convert to fraction form
    30,988.98/42,765.03 = 16,841.79/x
  3. Step 3: Cross multiply
    30,988.98x = 42,765.03 × 16,841.79
  4. Step 4: Simplify right side
    30,988.98x = 720,239,654.60
  5. Step 5: Solve for x
    x = 720,239,654.60/30,988.98
  6. Step 6: Final answer
    x = 23,241.80

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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.