Home / 12,878.64-19,319.58-4,556.70

Finding the Fourth Proportional to 12,878.64, 19,319.58 and 4,556.70

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Solution

The fourth proportional to 12,878.64, 19,319.58 and 4,556.70 is: 6,835.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.64 : 19,319.58 = 4,556.70 : x
  2. Step 2: Convert to fraction form
    12,878.64/19,319.58 = 4,556.70/x
  3. Step 3: Cross multiply
    12,878.64x = 19,319.58 × 4,556.70
  4. Step 4: Simplify right side
    12,878.64x = 88,033,530.19
  5. Step 5: Solve for x
    x = 88,033,530.19/12,878.64
  6. Step 6: Final answer
    x = 6,835.62

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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.