Home / 20,725.88-28,602.32-11,295.05

Finding the Fourth Proportional to 20,725.88, 28,602.32 and 11,295.05

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Solution

The fourth proportional to 20,725.88, 28,602.32 and 11,295.05 is: 15,587.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.88 : 28,602.32 = 11,295.05 : x
  2. Step 2: Convert to fraction form
    20,725.88/28,602.32 = 11,295.05/x
  3. Step 3: Cross multiply
    20,725.88x = 28,602.32 × 11,295.05
  4. Step 4: Simplify right side
    20,725.88x = 323,064,435.03
  5. Step 5: Solve for x
    x = 323,064,435.03/20,725.88
  6. Step 6: Final answer
    x = 15,587.49

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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.