Home / 30,945.06-42,682.11-28,401.03

Finding the Fourth Proportional to 30,945.06, 42,682.11 and 28,401.03

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Solution

The fourth proportional to 30,945.06, 42,682.11 and 28,401.03 is: 39,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,945.06 : 42,682.11 = 28,401.03 : x
  2. Step 2: Convert to fraction form
    30,945.06/42,682.11 = 28,401.03/x
  3. Step 3: Cross multiply
    30,945.06x = 42,682.11 × 28,401.03
  4. Step 4: Simplify right side
    30,945.06x = 1,212,215,886.57
  5. Step 5: Solve for x
    x = 1,212,215,886.57/30,945.06
  6. Step 6: Final answer
    x = 39,173.16

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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.