Home / 12,878.38-19,317.43-5,087.13

Finding the Fourth Proportional to 12,878.38, 19,317.43 and 5,087.13

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Solution

The fourth proportional to 12,878.38, 19,317.43 and 5,087.13 is: 7,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.38 : 19,317.43 = 5,087.13 : x
  2. Step 2: Convert to fraction form
    12,878.38/19,317.43 = 5,087.13/x
  3. Step 3: Cross multiply
    12,878.38x = 19,317.43 × 5,087.13
  4. Step 4: Simplify right side
    12,878.38x = 98,270,277.68
  5. Step 5: Solve for x
    x = 98,270,277.68/12,878.38
  6. Step 6: Final answer
    x = 7,630.64

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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.