Home / 15,435.23-21,300.48-8,361.63

Finding the Fourth Proportional to 15,435.23, 21,300.48 and 8,361.63

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Solution

The fourth proportional to 15,435.23, 21,300.48 and 8,361.63 is: 11,538.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,435.23 : 21,300.48 = 8,361.63 : x
  2. Step 2: Convert to fraction form
    15,435.23/21,300.48 = 8,361.63/x
  3. Step 3: Cross multiply
    15,435.23x = 21,300.48 × 8,361.63
  4. Step 4: Simplify right side
    15,435.23x = 178,106,732.58
  5. Step 5: Solve for x
    x = 178,106,732.58/15,435.23
  6. Step 6: Final answer
    x = 11,538.98

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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.