Home / 20,455.63-28,227.48-11,503.03

Finding the Fourth Proportional to 20,455.63, 28,227.48 and 11,503.03

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Solution

The fourth proportional to 20,455.63, 28,227.48 and 11,503.03 is: 15,873.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.63 : 28,227.48 = 11,503.03 : x
  2. Step 2: Convert to fraction form
    20,455.63/28,227.48 = 11,503.03/x
  3. Step 3: Cross multiply
    20,455.63x = 28,227.48 × 11,503.03
  4. Step 4: Simplify right side
    20,455.63x = 324,701,549.26
  5. Step 5: Solve for x
    x = 324,701,549.26/20,455.63
  6. Step 6: Final answer
    x = 15,873.46

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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.