Home / 13,583.52-18,729.47-12,742.88

Finding the Fourth Proportional to 13,583.52, 18,729.47 and 12,742.88

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Solution

The fourth proportional to 13,583.52, 18,729.47 and 12,742.88 is: 17,570.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.52 : 18,729.47 = 12,742.88 : x
  2. Step 2: Convert to fraction form
    13,583.52/18,729.47 = 12,742.88/x
  3. Step 3: Cross multiply
    13,583.52x = 18,729.47 × 12,742.88
  4. Step 4: Simplify right side
    13,583.52x = 238,667,326.88
  5. Step 5: Solve for x
    x = 238,667,326.88/13,583.52
  6. Step 6: Final answer
    x = 17,570.36

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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.