Home / 12,880.21-19,318.02-5,858.58

Finding the Fourth Proportional to 12,880.21, 19,318.02 and 5,858.58

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Solution

The fourth proportional to 12,880.21, 19,318.02 and 5,858.58 is: 8,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.21 : 19,318.02 = 5,858.58 : x
  2. Step 2: Convert to fraction form
    12,880.21/19,318.02 = 5,858.58/x
  3. Step 3: Cross multiply
    12,880.21x = 19,318.02 × 5,858.58
  4. Step 4: Simplify right side
    12,880.21x = 113,176,165.61
  5. Step 5: Solve for x
    x = 113,176,165.61/12,880.21
  6. Step 6: Final answer
    x = 8,786.83

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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.