Home / 21,831.76-30,097.31-18,461.05

Finding the Fourth Proportional to 21,831.76, 30,097.31 and 18,461.05

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Solution

The fourth proportional to 21,831.76, 30,097.31 and 18,461.05 is: 25,450.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.76 : 30,097.31 = 18,461.05 : x
  2. Step 2: Convert to fraction form
    21,831.76/30,097.31 = 18,461.05/x
  3. Step 3: Cross multiply
    21,831.76x = 30,097.31 × 18,461.05
  4. Step 4: Simplify right side
    21,831.76x = 555,627,777.23
  5. Step 5: Solve for x
    x = 555,627,777.23/21,831.76
  6. Step 6: Final answer
    x = 25,450.43

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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.