Home / 31,181.24-43,065.99-22,721.20

Finding the Fourth Proportional to 31,181.24, 43,065.99 and 22,721.20

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Solution

The fourth proportional to 31,181.24, 43,065.99 and 22,721.20 is: 31,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,181.24 : 43,065.99 = 22,721.20 : x
  2. Step 2: Convert to fraction form
    31,181.24/43,065.99 = 22,721.20/x
  3. Step 3: Cross multiply
    31,181.24x = 43,065.99 × 22,721.20
  4. Step 4: Simplify right side
    31,181.24x = 978,510,971.99
  5. Step 5: Solve for x
    x = 978,510,971.99/31,181.24
  6. Step 6: Final answer
    x = 31,381.40

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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.