Home / 20,802.29-28,708.31-11,852.60

Finding the Fourth Proportional to 20,802.29, 28,708.31 and 11,852.60

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Solution

The fourth proportional to 20,802.29, 28,708.31 and 11,852.60 is: 16,357.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.29 : 28,708.31 = 11,852.60 : x
  2. Step 2: Convert to fraction form
    20,802.29/28,708.31 = 11,852.60/x
  3. Step 3: Cross multiply
    20,802.29x = 28,708.31 × 11,852.60
  4. Step 4: Simplify right side
    20,802.29x = 340,268,001.20
  5. Step 5: Solve for x
    x = 340,268,001.20/20,802.29
  6. Step 6: Final answer
    x = 16,357.24

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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.