Home / 30,609.36-42,253.80-18,676.92

Finding the Fourth Proportional to 30,609.36, 42,253.80 and 18,676.92

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Solution

The fourth proportional to 30,609.36, 42,253.80 and 18,676.92 is: 25,782.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,609.36 : 42,253.80 = 18,676.92 : x
  2. Step 2: Convert to fraction form
    30,609.36/42,253.80 = 18,676.92/x
  3. Step 3: Cross multiply
    30,609.36x = 42,253.80 × 18,676.92
  4. Step 4: Simplify right side
    30,609.36x = 789,170,842.30
  5. Step 5: Solve for x
    x = 789,170,842.30/30,609.36
  6. Step 6: Final answer
    x = 25,782.01

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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.