Home / 30,140.82-45,206.01-7,954.38

Finding the Fourth Proportional to 30,140.82, 45,206.01 and 7,954.38

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Solution

The fourth proportional to 30,140.82, 45,206.01 and 7,954.38 is: 11,930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,140.82 : 45,206.01 = 7,954.38 : x
  2. Step 2: Convert to fraction form
    30,140.82/45,206.01 = 7,954.38/x
  3. Step 3: Cross multiply
    30,140.82x = 45,206.01 × 7,954.38
  4. Step 4: Simplify right side
    30,140.82x = 359,585,781.82
  5. Step 5: Solve for x
    x = 359,585,781.82/30,140.82
  6. Step 6: Final answer
    x = 11,930.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.