Home / 30,918.23-42,666.94-16,771.09

Finding the Fourth Proportional to 30,918.23, 42,666.94 and 16,771.09

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Solution

The fourth proportional to 30,918.23, 42,666.94 and 16,771.09 is: 23,143.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,918.23 : 42,666.94 = 16,771.09 : x
  2. Step 2: Convert to fraction form
    30,918.23/42,666.94 = 16,771.09/x
  3. Step 3: Cross multiply
    30,918.23x = 42,666.94 × 16,771.09
  4. Step 4: Simplify right side
    30,918.23x = 715,571,090.76
  5. Step 5: Solve for x
    x = 715,571,090.76/30,918.23
  6. Step 6: Final answer
    x = 23,143.99

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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.