Home / 15,485.58-21,370.64-9,519.26

Finding the Fourth Proportional to 15,485.58, 21,370.64 and 9,519.26

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Solution

The fourth proportional to 15,485.58, 21,370.64 and 9,519.26 is: 13,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.58 : 21,370.64 = 9,519.26 : x
  2. Step 2: Convert to fraction form
    15,485.58/21,370.64 = 9,519.26/x
  3. Step 3: Cross multiply
    15,485.58x = 21,370.64 × 9,519.26
  4. Step 4: Simplify right side
    15,485.58x = 203,432,524.08
  5. Step 5: Solve for x
    x = 203,432,524.08/15,485.58
  6. Step 6: Final answer
    x = 13,136.90

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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.