Home / 15,736.80-23,583.60-12,820.80

Finding the Fourth Proportional to 15,736.80, 23,583.60 and 12,820.80

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Solution

The fourth proportional to 15,736.80, 23,583.60 and 12,820.80 is: 19,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,736.80 : 23,583.60 = 12,820.80 : x
  2. Step 2: Convert to fraction form
    15,736.80/23,583.60 = 12,820.80/x
  3. Step 3: Cross multiply
    15,736.80x = 23,583.60 × 12,820.80
  4. Step 4: Simplify right side
    15,736.80x = 302,360,618.88
  5. Step 5: Solve for x
    x = 302,360,618.88/15,736.80
  6. Step 6: Final answer
    x = 19,213.60

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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.