Home / 30,948.62-42,709.27-18,202.34

Finding the Fourth Proportional to 30,948.62, 42,709.27 and 18,202.34

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Solution

The fourth proportional to 30,948.62, 42,709.27 and 18,202.34 is: 25,119.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,948.62 : 42,709.27 = 18,202.34 : x
  2. Step 2: Convert to fraction form
    30,948.62/42,709.27 = 18,202.34/x
  3. Step 3: Cross multiply
    30,948.62x = 42,709.27 × 18,202.34
  4. Step 4: Simplify right side
    30,948.62x = 777,408,508.85
  5. Step 5: Solve for x
    x = 777,408,508.85/30,948.62
  6. Step 6: Final answer
    x = 25,119.33

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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.