Home / 20,393.54-28,165.88-14,039.63

Finding the Fourth Proportional to 20,393.54, 28,165.88 and 14,039.63

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Solution

The fourth proportional to 20,393.54, 28,165.88 and 14,039.63 is: 19,390.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.54 : 28,165.88 = 14,039.63 : x
  2. Step 2: Convert to fraction form
    20,393.54/28,165.88 = 14,039.63/x
  3. Step 3: Cross multiply
    20,393.54x = 28,165.88 × 14,039.63
  4. Step 4: Simplify right side
    20,393.54x = 395,438,428.09
  5. Step 5: Solve for x
    x = 395,438,428.09/20,393.54
  6. Step 6: Final answer
    x = 19,390.38

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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.