Home / 20,804.28-28,709.76-11,852.16

Finding the Fourth Proportional to 20,804.28, 28,709.76 and 11,852.16

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Solution

The fourth proportional to 20,804.28, 28,709.76 and 11,852.16 is: 16,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.28 : 28,709.76 = 11,852.16 : x
  2. Step 2: Convert to fraction form
    20,804.28/28,709.76 = 11,852.16/x
  3. Step 3: Cross multiply
    20,804.28x = 28,709.76 × 11,852.16
  4. Step 4: Simplify right side
    20,804.28x = 340,272,669.08
  5. Step 5: Solve for x
    x = 340,272,669.08/20,804.28
  6. Step 6: Final answer
    x = 16,355.90

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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.