Home / 20,927.26-28,878.42-11,495.62

Finding the Fourth Proportional to 20,927.26, 28,878.42 and 11,495.62

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Solution

The fourth proportional to 20,927.26, 28,878.42 and 11,495.62 is: 15,863.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.26 : 28,878.42 = 11,495.62 : x
  2. Step 2: Convert to fraction form
    20,927.26/28,878.42 = 11,495.62/x
  3. Step 3: Cross multiply
    20,927.26x = 28,878.42 × 11,495.62
  4. Step 4: Simplify right side
    20,927.26x = 331,975,342.52
  5. Step 5: Solve for x
    x = 331,975,342.52/20,927.26
  6. Step 6: Final answer
    x = 15,863.30

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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.