Home / 21,823.21-30,133.79-17,790.67

Finding the Fourth Proportional to 21,823.21, 30,133.79 and 17,790.67

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Solution

The fourth proportional to 21,823.21, 30,133.79 and 17,790.67 is: 24,565.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,823.21 : 30,133.79 = 17,790.67 : x
  2. Step 2: Convert to fraction form
    21,823.21/30,133.79 = 17,790.67/x
  3. Step 3: Cross multiply
    21,823.21x = 30,133.79 × 17,790.67
  4. Step 4: Simplify right side
    21,823.21x = 536,100,313.74
  5. Step 5: Solve for x
    x = 536,100,313.74/21,823.21
  6. Step 6: Final answer
    x = 24,565.60

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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.