Home / 12,889.23-19,315.60-5,486.23

Finding the Fourth Proportional to 12,889.23, 19,315.60 and 5,486.23

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Solution

The fourth proportional to 12,889.23, 19,315.60 and 5,486.23 is: 8,221.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.23 : 19,315.60 = 5,486.23 : x
  2. Step 2: Convert to fraction form
    12,889.23/19,315.60 = 5,486.23/x
  3. Step 3: Cross multiply
    12,889.23x = 19,315.60 × 5,486.23
  4. Step 4: Simplify right side
    12,889.23x = 105,969,834.62
  5. Step 5: Solve for x
    x = 105,969,834.62/12,889.23
  6. Step 6: Final answer
    x = 8,221.58

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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.