Home / 15,778.40-23,650.70-7,865.33

Finding the Fourth Proportional to 15,778.40, 23,650.70 and 7,865.33

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Solution

The fourth proportional to 15,778.40, 23,650.70 and 7,865.33 is: 11,789.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.40 : 23,650.70 = 7,865.33 : x
  2. Step 2: Convert to fraction form
    15,778.40/23,650.70 = 7,865.33/x
  3. Step 3: Cross multiply
    15,778.40x = 23,650.70 × 7,865.33
  4. Step 4: Simplify right side
    15,778.40x = 186,020,402.65
  5. Step 5: Solve for x
    x = 186,020,402.65/15,778.40
  6. Step 6: Final answer
    x = 11,789.56

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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.