Home / 15,435.24-21,300.48-8,361.54

Finding the Fourth Proportional to 15,435.24, 21,300.48 and 8,361.54

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Solution

The fourth proportional to 15,435.24, 21,300.48 and 8,361.54 is: 11,538.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.24 : 21,300.48 = 8,361.54 : x
  2. Step 2: Convert to fraction form
    15,435.24/21,300.48 = 8,361.54/x
  3. Step 3: Cross multiply
    15,435.24x = 21,300.48 × 8,361.54
  4. Step 4: Simplify right side
    15,435.24x = 178,104,815.54
  5. Step 5: Solve for x
    x = 178,104,815.54/15,435.24
  6. Step 6: Final answer
    x = 11,538.84

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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.