Home / 31,181.04-43,015.44-18,601.20

Finding the Fourth Proportional to 31,181.04, 43,015.44 and 18,601.20

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Solution

The fourth proportional to 31,181.04, 43,015.44 and 18,601.20 is: 25,661.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,181.04 : 43,015.44 = 18,601.20 : x
  2. Step 2: Convert to fraction form
    31,181.04/43,015.44 = 18,601.20/x
  3. Step 3: Cross multiply
    31,181.04x = 43,015.44 × 18,601.20
  4. Step 4: Simplify right side
    31,181.04x = 800,138,802.53
  5. Step 5: Solve for x
    x = 800,138,802.53/31,181.04
  6. Step 6: Final answer
    x = 25,661.07

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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.