Home / 15,323.76-21,160.62-9,668.54

Finding the Fourth Proportional to 15,323.76, 21,160.62 and 9,668.54

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Solution

The fourth proportional to 15,323.76, 21,160.62 and 9,668.54 is: 13,351.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,323.76 : 21,160.62 = 9,668.54 : x
  2. Step 2: Convert to fraction form
    15,323.76/21,160.62 = 9,668.54/x
  3. Step 3: Cross multiply
    15,323.76x = 21,160.62 × 9,668.54
  4. Step 4: Simplify right side
    15,323.76x = 204,592,300.89
  5. Step 5: Solve for x
    x = 204,592,300.89/15,323.76
  6. Step 6: Final answer
    x = 13,351.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.