Home / 20,845.45-28,764.90-12,346.07

Finding the Fourth Proportional to 20,845.45, 28,764.90 and 12,346.07

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Solution

The fourth proportional to 20,845.45, 28,764.90 and 12,346.07 is: 17,036.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.45 : 28,764.90 = 12,346.07 : x
  2. Step 2: Convert to fraction form
    20,845.45/28,764.90 = 12,346.07/x
  3. Step 3: Cross multiply
    20,845.45x = 28,764.90 × 12,346.07
  4. Step 4: Simplify right side
    20,845.45x = 355,133,452.20
  5. Step 5: Solve for x
    x = 355,133,452.20/20,845.45
  6. Step 6: Final answer
    x = 17,036.50

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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.