Home / 28,240.72-42,361.39-8,519.45

Finding the Fourth Proportional to 28,240.72, 42,361.39 and 8,519.45

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Solution

The fourth proportional to 28,240.72, 42,361.39 and 8,519.45 is: 12,779.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.72 : 42,361.39 = 8,519.45 : x
  2. Step 2: Convert to fraction form
    28,240.72/42,361.39 = 8,519.45/x
  3. Step 3: Cross multiply
    28,240.72x = 42,361.39 × 8,519.45
  4. Step 4: Simplify right side
    28,240.72x = 360,895,653.81
  5. Step 5: Solve for x
    x = 360,895,653.81/28,240.72
  6. Step 6: Final answer
    x = 12,779.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.