Home / 20,944.36-28,903.44-11,513.20

Finding the Fourth Proportional to 20,944.36, 28,903.44 and 11,513.20

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Solution

The fourth proportional to 20,944.36, 28,903.44 and 11,513.20 is: 15,888.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,944.36 : 28,903.44 = 11,513.20 : x
  2. Step 2: Convert to fraction form
    20,944.36/28,903.44 = 11,513.20/x
  3. Step 3: Cross multiply
    20,944.36x = 28,903.44 × 11,513.20
  4. Step 4: Simplify right side
    20,944.36x = 332,771,085.41
  5. Step 5: Solve for x
    x = 332,771,085.41/20,944.36
  6. Step 6: Final answer
    x = 15,888.34

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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.