Home / 12,987.90-19,483.94-4,556.75

Finding the Fourth Proportional to 12,987.90, 19,483.94 and 4,556.75

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Solution

The fourth proportional to 12,987.90, 19,483.94 and 4,556.75 is: 6,835.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.90 : 19,483.94 = 4,556.75 : x
  2. Step 2: Convert to fraction form
    12,987.90/19,483.94 = 4,556.75/x
  3. Step 3: Cross multiply
    12,987.90x = 19,483.94 × 4,556.75
  4. Step 4: Simplify right side
    12,987.90x = 88,783,357.57
  5. Step 5: Solve for x
    x = 88,783,357.57/12,987.90
  6. Step 6: Final answer
    x = 6,835.85

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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.