Home / 12,878.07-19,314.08-3,515.87

Finding the Fourth Proportional to 12,878.07, 19,314.08 and 3,515.87

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Solution

The fourth proportional to 12,878.07, 19,314.08 and 3,515.87 is: 5,272.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.07 : 19,314.08 = 3,515.87 : x
  2. Step 2: Convert to fraction form
    12,878.07/19,314.08 = 3,515.87/x
  3. Step 3: Cross multiply
    12,878.07x = 19,314.08 × 3,515.87
  4. Step 4: Simplify right side
    12,878.07x = 67,905,686.89
  5. Step 5: Solve for x
    x = 67,905,686.89/12,878.07
  6. Step 6: Final answer
    x = 5,272.97

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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.