Home / 20,867.39-28,796.95-11,307.53

Finding the Fourth Proportional to 20,867.39, 28,796.95 and 11,307.53

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Solution

The fourth proportional to 20,867.39, 28,796.95 and 11,307.53 is: 15,604.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.39 : 28,796.95 = 11,307.53 : x
  2. Step 2: Convert to fraction form
    20,867.39/28,796.95 = 11,307.53/x
  3. Step 3: Cross multiply
    20,867.39x = 28,796.95 × 11,307.53
  4. Step 4: Simplify right side
    20,867.39x = 325,622,203.78
  5. Step 5: Solve for x
    x = 325,622,203.78/20,867.39
  6. Step 6: Final answer
    x = 15,604.36

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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.