Home / 30,578.21-42,198.33-18,477.01

Finding the Fourth Proportional to 30,578.21, 42,198.33 and 18,477.01

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Solution

The fourth proportional to 30,578.21, 42,198.33 and 18,477.01 is: 25,498.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,578.21 : 42,198.33 = 18,477.01 : x
  2. Step 2: Convert to fraction form
    30,578.21/42,198.33 = 18,477.01/x
  3. Step 3: Cross multiply
    30,578.21x = 42,198.33 × 18,477.01
  4. Step 4: Simplify right side
    30,578.21x = 779,699,087.43
  5. Step 5: Solve for x
    x = 779,699,087.43/30,578.21
  6. Step 6: Final answer
    x = 25,498.52

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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.