Home / 30,519.87-42,116.60-16,907.22

Finding the Fourth Proportional to 30,519.87, 42,116.60 and 16,907.22

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Solution

The fourth proportional to 30,519.87, 42,116.60 and 16,907.22 is: 23,331.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519.87 : 42,116.60 = 16,907.22 : x
  2. Step 2: Convert to fraction form
    30,519.87/42,116.60 = 16,907.22/x
  3. Step 3: Cross multiply
    30,519.87x = 42,116.60 × 16,907.22
  4. Step 4: Simplify right side
    30,519.87x = 712,074,537.32
  5. Step 5: Solve for x
    x = 712,074,537.32/30,519.87
  6. Step 6: Final answer
    x = 23,331.51

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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.