Home / 15,071.44-20,799.72-8,782.48

Finding the Fourth Proportional to 15,071.44, 20,799.72 and 8,782.48

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Solution

The fourth proportional to 15,071.44, 20,799.72 and 8,782.48 is: 12,120.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.44 : 20,799.72 = 8,782.48 : x
  2. Step 2: Convert to fraction form
    15,071.44/20,799.72 = 8,782.48/x
  3. Step 3: Cross multiply
    15,071.44x = 20,799.72 × 8,782.48
  4. Step 4: Simplify right side
    15,071.44x = 182,673,124.91
  5. Step 5: Solve for x
    x = 182,673,124.91/15,071.44
  6. Step 6: Final answer
    x = 12,120.48

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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.