Home / 20,437.84-28,193.63-13,725.37

Finding the Fourth Proportional to 20,437.84, 28,193.63 and 13,725.37

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Solution

The fourth proportional to 20,437.84, 28,193.63 and 13,725.37 is: 18,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.84 : 28,193.63 = 13,725.37 : x
  2. Step 2: Convert to fraction form
    20,437.84/28,193.63 = 13,725.37/x
  3. Step 3: Cross multiply
    20,437.84x = 28,193.63 × 13,725.37
  4. Step 4: Simplify right side
    20,437.84x = 386,968,003.39
  5. Step 5: Solve for x
    x = 386,968,003.39/20,437.84
  6. Step 6: Final answer
    x = 18,933.90

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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.