Home / 15,330.97-21,157.49-9,361.67

Finding the Fourth Proportional to 15,330.97, 21,157.49 and 9,361.67

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Solution

The fourth proportional to 15,330.97, 21,157.49 and 9,361.67 is: 12,919.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.97 : 21,157.49 = 9,361.67 : x
  2. Step 2: Convert to fraction form
    15,330.97/21,157.49 = 9,361.67/x
  3. Step 3: Cross multiply
    15,330.97x = 21,157.49 × 9,361.67
  4. Step 4: Simplify right side
    15,330.97x = 198,069,392.60
  5. Step 5: Solve for x
    x = 198,069,392.60/15,330.97
  6. Step 6: Final answer
    x = 12,919.56

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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.