Home / 20,845.70-28,765.24-12,346.32

Finding the Fourth Proportional to 20,845.70, 28,765.24 and 12,346.32

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Solution

The fourth proportional to 20,845.70, 28,765.24 and 12,346.32 is: 17,036.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.70 : 28,765.24 = 12,346.32 : x
  2. Step 2: Convert to fraction form
    20,845.70/28,765.24 = 12,346.32/x
  3. Step 3: Cross multiply
    20,845.70x = 28,765.24 × 12,346.32
  4. Step 4: Simplify right side
    20,845.70x = 355,144,888.78
  5. Step 5: Solve for x
    x = 355,144,888.78/20,845.70
  6. Step 6: Final answer
    x = 17,036.84

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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.