Home / 13,695.42-18,866.88-13,028.37

Finding the Fourth Proportional to 13,695.42, 18,866.88 and 13,028.37

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Solution

The fourth proportional to 13,695.42, 18,866.88 and 13,028.37 is: 17,947.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.42 : 18,866.88 = 13,028.37 : x
  2. Step 2: Convert to fraction form
    13,695.42/18,866.88 = 13,028.37/x
  3. Step 3: Cross multiply
    13,695.42x = 18,866.88 × 13,028.37
  4. Step 4: Simplify right side
    13,695.42x = 245,804,693.39
  5. Step 5: Solve for x
    x = 245,804,693.39/13,695.42
  6. Step 6: Final answer
    x = 17,947.95

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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.