Home / 14,342.85-21,515.60-5,578.43

Finding the Fourth Proportional to 14,342.85, 21,515.60 and 5,578.43

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Solution

The fourth proportional to 14,342.85, 21,515.60 and 5,578.43 is: 8,368.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,342.85 : 21,515.60 = 5,578.43 : x
  2. Step 2: Convert to fraction form
    14,342.85/21,515.60 = 5,578.43/x
  3. Step 3: Cross multiply
    14,342.85x = 21,515.60 × 5,578.43
  4. Step 4: Simplify right side
    14,342.85x = 120,023,174.88
  5. Step 5: Solve for x
    x = 120,023,174.88/14,342.85
  6. Step 6: Final answer
    x = 8,368.15

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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.