Home / 20,868.48-28,798.22-11,308.32

Finding the Fourth Proportional to 20,868.48, 28,798.22 and 11,308.32

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Solution

The fourth proportional to 20,868.48, 28,798.22 and 11,308.32 is: 15,605.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.48 : 28,798.22 = 11,308.32 : x
  2. Step 2: Convert to fraction form
    20,868.48/28,798.22 = 11,308.32/x
  3. Step 3: Cross multiply
    20,868.48x = 28,798.22 × 11,308.32
  4. Step 4: Simplify right side
    20,868.48x = 325,659,487.19
  5. Step 5: Solve for x
    x = 325,659,487.19/20,868.48
  6. Step 6: Final answer
    x = 15,605.33

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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.