Home / 20,495.04-28,282.38-11,420.19

Finding the Fourth Proportional to 20,495.04, 28,282.38 and 11,420.19

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Solution

The fourth proportional to 20,495.04, 28,282.38 and 11,420.19 is: 15,759.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.04 : 28,282.38 = 11,420.19 : x
  2. Step 2: Convert to fraction form
    20,495.04/28,282.38 = 11,420.19/x
  3. Step 3: Cross multiply
    20,495.04x = 28,282.38 × 11,420.19
  4. Step 4: Simplify right side
    20,495.04x = 322,990,153.25
  5. Step 5: Solve for x
    x = 322,990,153.25/20,495.04
  6. Step 6: Final answer
    x = 15,759.43

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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.