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Finding the Fourth Proportional to 15,792.18, 21,792.36 and 9,823.68

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Solution

The fourth proportional to 15,792.18, 21,792.36 and 9,823.68 is: 13,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,792.18 : 21,792.36 = 9,823.68 : x
  2. Step 2: Convert to fraction form
    15,792.18/21,792.36 = 9,823.68/x
  3. Step 3: Cross multiply
    15,792.18x = 21,792.36 × 9,823.68
  4. Step 4: Simplify right side
    15,792.18x = 214,081,171.08
  5. Step 5: Solve for x
    x = 214,081,171.08/15,792.18
  6. Step 6: Final answer
    x = 13,556.15

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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.