Home / 19,243.40-28,865.10-5,390.60

Finding the Fourth Proportional to 19,243.40, 28,865.10 and 5,390.60

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Solution

The fourth proportional to 19,243.40, 28,865.10 and 5,390.60 is: 8,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.40 : 28,865.10 = 5,390.60 : x
  2. Step 2: Convert to fraction form
    19,243.40/28,865.10 = 5,390.60/x
  3. Step 3: Cross multiply
    19,243.40x = 28,865.10 × 5,390.60
  4. Step 4: Simplify right side
    19,243.40x = 155,600,208.06
  5. Step 5: Solve for x
    x = 155,600,208.06/19,243.40
  6. Step 6: Final answer
    x = 8,085.90

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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.