Home / 30,028.69-45,050.38-21,161.32

Finding the Fourth Proportional to 30,028.69, 45,050.38 and 21,161.32

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Solution

The fourth proportional to 30,028.69, 45,050.38 and 21,161.32 is: 31,747.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,028.69 : 45,050.38 = 21,161.32 : x
  2. Step 2: Convert to fraction form
    30,028.69/45,050.38 = 21,161.32/x
  3. Step 3: Cross multiply
    30,028.69x = 45,050.38 × 21,161.32
  4. Step 4: Simplify right side
    30,028.69x = 953,325,341.77
  5. Step 5: Solve for x
    x = 953,325,341.77/30,028.69
  6. Step 6: Final answer
    x = 31,747.15

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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.