Home / 12,878.52-19,319.30-4,556.80

Finding the Fourth Proportional to 12,878.52, 19,319.30 and 4,556.80

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Solution

The fourth proportional to 12,878.52, 19,319.30 and 4,556.80 is: 6,835.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.52 : 19,319.30 = 4,556.80 : x
  2. Step 2: Convert to fraction form
    12,878.52/19,319.30 = 4,556.80/x
  3. Step 3: Cross multiply
    12,878.52x = 19,319.30 × 4,556.80
  4. Step 4: Simplify right side
    12,878.52x = 88,034,186.24
  5. Step 5: Solve for x
    x = 88,034,186.24/12,878.52
  6. Step 6: Final answer
    x = 6,835.74

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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.