Home / 30,392.39-41,891.28-20,317.16

Finding the Fourth Proportional to 30,392.39, 41,891.28 and 20,317.16

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Solution

The fourth proportional to 30,392.39, 41,891.28 and 20,317.16 is: 28,004.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.39 : 41,891.28 = 20,317.16 : x
  2. Step 2: Convert to fraction form
    30,392.39/41,891.28 = 20,317.16/x
  3. Step 3: Cross multiply
    30,392.39x = 41,891.28 × 20,317.16
  4. Step 4: Simplify right side
    30,392.39x = 851,111,628.91
  5. Step 5: Solve for x
    x = 851,111,628.91/30,392.39
  6. Step 6: Final answer
    x = 28,004.11

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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.