Home / 20,425.37-28,188-11,927.35

Finding the Fourth Proportional to 20,425.37, 28,188 and 11,927.35

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Solution

The fourth proportional to 20,425.37, 28,188 and 11,927.35 is: 16,460.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.37 : 28,188 = 11,927.35 : x
  2. Step 2: Convert to fraction form
    20,425.37/28,188 = 11,927.35/x
  3. Step 3: Cross multiply
    20,425.37x = 28,188 × 11,927.35
  4. Step 4: Simplify right side
    20,425.37x = 336,208,177.04
  5. Step 5: Solve for x
    x = 336,208,177.04/20,425.37
  6. Step 6: Final answer
    x = 16,460.33

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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.