Home / 20,895.57-28,835.64-11,335.23

Finding the Fourth Proportional to 20,895.57, 28,835.64 and 11,335.23

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Solution

The fourth proportional to 20,895.57, 28,835.64 and 11,335.23 is: 15,642.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.57 : 28,835.64 = 11,335.23 : x
  2. Step 2: Convert to fraction form
    20,895.57/28,835.64 = 11,335.23/x
  3. Step 3: Cross multiply
    20,895.57x = 28,835.64 × 11,335.23
  4. Step 4: Simplify right side
    20,895.57x = 326,858,611.60
  5. Step 5: Solve for x
    x = 326,858,611.60/20,895.57
  6. Step 6: Final answer
    x = 15,642.48

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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.