Home / 20,895.90-28,836.80-11,464.48

Finding the Fourth Proportional to 20,895.90, 28,836.80 and 11,464.48

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Solution

The fourth proportional to 20,895.90, 28,836.80 and 11,464.48 is: 15,821.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.90 : 28,836.80 = 11,464.48 : x
  2. Step 2: Convert to fraction form
    20,895.90/28,836.80 = 11,464.48/x
  3. Step 3: Cross multiply
    20,895.90x = 28,836.80 × 11,464.48
  4. Step 4: Simplify right side
    20,895.90x = 330,598,916.86
  5. Step 5: Solve for x
    x = 330,598,916.86/20,895.90
  6. Step 6: Final answer
    x = 15,821.23

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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.