Home / 15,890.85-21,884.99-15,546.47

Finding the Fourth Proportional to 15,890.85, 21,884.99 and 15,546.47

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Solution

The fourth proportional to 15,890.85, 21,884.99 and 15,546.47 is: 21,410.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.85 : 21,884.99 = 15,546.47 : x
  2. Step 2: Convert to fraction form
    15,890.85/21,884.99 = 15,546.47/x
  3. Step 3: Cross multiply
    15,890.85x = 21,884.99 × 15,546.47
  4. Step 4: Simplify right side
    15,890.85x = 340,234,153.33
  5. Step 5: Solve for x
    x = 340,234,153.33/15,890.85
  6. Step 6: Final answer
    x = 21,410.70

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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.