Home / 21,881.37-32,601.75-20,449.19

Finding the Fourth Proportional to 21,881.37, 32,601.75 and 20,449.19

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Solution

The fourth proportional to 21,881.37, 32,601.75 and 20,449.19 is: 30,467.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881.37 : 32,601.75 = 20,449.19 : x
  2. Step 2: Convert to fraction form
    21,881.37/32,601.75 = 20,449.19/x
  3. Step 3: Cross multiply
    21,881.37x = 32,601.75 × 20,449.19
  4. Step 4: Simplify right side
    21,881.37x = 666,679,217.07
  5. Step 5: Solve for x
    x = 666,679,217.07/21,881.37
  6. Step 6: Final answer
    x = 30,467.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.