Home / 30,891.48-42,630.24-16,744.32

Finding the Fourth Proportional to 30,891.48, 42,630.24 and 16,744.32

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Solution

The fourth proportional to 30,891.48, 42,630.24 and 16,744.32 is: 23,107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,891.48 : 42,630.24 = 16,744.32 : x
  2. Step 2: Convert to fraction form
    30,891.48/42,630.24 = 16,744.32/x
  3. Step 3: Cross multiply
    30,891.48x = 42,630.24 × 16,744.32
  4. Step 4: Simplify right side
    30,891.48x = 713,814,380.24
  5. Step 5: Solve for x
    x = 713,814,380.24/30,891.48
  6. Step 6: Final answer
    x = 23,107.16

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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.