Home / 15,435.24-21,300.57-8,361.64

Finding the Fourth Proportional to 15,435.24, 21,300.57 and 8,361.64

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Solution

The fourth proportional to 15,435.24, 21,300.57 and 8,361.64 is: 11,539.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.24 : 21,300.57 = 8,361.64 : x
  2. Step 2: Convert to fraction form
    15,435.24/21,300.57 = 8,361.64/x
  3. Step 3: Cross multiply
    15,435.24x = 21,300.57 × 8,361.64
  4. Step 4: Simplify right side
    15,435.24x = 178,107,698.13
  5. Step 5: Solve for x
    x = 178,107,698.13/15,435.24
  6. Step 6: Final answer
    x = 11,539.03

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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.