Home / 20,792.50-28,693.65-11,361.13

Finding the Fourth Proportional to 20,792.50, 28,693.65 and 11,361.13

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Solution

The fourth proportional to 20,792.50, 28,693.65 and 11,361.13 is: 15,678.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.50 : 28,693.65 = 11,361.13 : x
  2. Step 2: Convert to fraction form
    20,792.50/28,693.65 = 11,361.13/x
  3. Step 3: Cross multiply
    20,792.50x = 28,693.65 × 11,361.13
  4. Step 4: Simplify right side
    20,792.50x = 325,992,287.82
  5. Step 5: Solve for x
    x = 325,992,287.82/20,792.50
  6. Step 6: Final answer
    x = 15,678.36

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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.