Home / 21,988.44-30,314.64-18,197.64

Finding the Fourth Proportional to 21,988.44, 30,314.64 and 18,197.64

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Solution

The fourth proportional to 21,988.44, 30,314.64 and 18,197.64 is: 25,088.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.44 : 30,314.64 = 18,197.64 : x
  2. Step 2: Convert to fraction form
    21,988.44/30,314.64 = 18,197.64/x
  3. Step 3: Cross multiply
    21,988.44x = 30,314.64 × 18,197.64
  4. Step 4: Simplify right side
    21,988.44x = 551,654,905.45
  5. Step 5: Solve for x
    x = 551,654,905.45/21,988.44
  6. Step 6: Final answer
    x = 25,088.41

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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.