Home / 20,802.32-28,705.82-11,850.74

Finding the Fourth Proportional to 20,802.32, 28,705.82 and 11,850.74

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Solution

The fourth proportional to 20,802.32, 28,705.82 and 11,850.74 is: 16,353.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.32 : 28,705.82 = 11,850.74 : x
  2. Step 2: Convert to fraction form
    20,802.32/28,705.82 = 11,850.74/x
  3. Step 3: Cross multiply
    20,802.32x = 28,705.82 × 11,850.74
  4. Step 4: Simplify right side
    20,802.32x = 340,185,209.31
  5. Step 5: Solve for x
    x = 340,185,209.31/20,802.32
  6. Step 6: Final answer
    x = 16,353.23

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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.