Home / 15,435.28-21,300.66-8,361.88

Finding the Fourth Proportional to 15,435.28, 21,300.66 and 8,361.88

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Solution

The fourth proportional to 15,435.28, 21,300.66 and 8,361.88 is: 11,539.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.28 : 21,300.66 = 8,361.88 : x
  2. Step 2: Convert to fraction form
    15,435.28/21,300.66 = 8,361.88/x
  3. Step 3: Cross multiply
    15,435.28x = 21,300.66 × 8,361.88
  4. Step 4: Simplify right side
    15,435.28x = 178,113,562.84
  5. Step 5: Solve for x
    x = 178,113,562.84/15,435.28
  6. Step 6: Final answer
    x = 11,539.38

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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.