Home / 15,284.85-21,033.32-13,520.67

Finding the Fourth Proportional to 15,284.85, 21,033.32 and 13,520.67

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Solution

The fourth proportional to 15,284.85, 21,033.32 and 13,520.67 is: 18,605.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,284.85 : 21,033.32 = 13,520.67 : x
  2. Step 2: Convert to fraction form
    15,284.85/21,033.32 = 13,520.67/x
  3. Step 3: Cross multiply
    15,284.85x = 21,033.32 × 13,520.67
  4. Step 4: Simplify right side
    15,284.85x = 284,384,511.12
  5. Step 5: Solve for x
    x = 284,384,511.12/15,284.85
  6. Step 6: Final answer
    x = 18,605.65

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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.