Home / 21,989.94-30,316.71-18,199.14

Finding the Fourth Proportional to 21,989.94, 30,316.71 and 18,199.14

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Solution

The fourth proportional to 21,989.94, 30,316.71 and 18,199.14 is: 25,090.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989.94 : 30,316.71 = 18,199.14 : x
  2. Step 2: Convert to fraction form
    21,989.94/30,316.71 = 18,199.14/x
  3. Step 3: Cross multiply
    21,989.94x = 30,316.71 × 18,199.14
  4. Step 4: Simplify right side
    21,989.94x = 551,738,049.63
  5. Step 5: Solve for x
    x = 551,738,049.63/21,989.94
  6. Step 6: Final answer
    x = 25,090.48

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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.