Home / 13,729.88-18,948.72-7,682.32

Finding the Fourth Proportional to 13,729.88, 18,948.72 and 7,682.32

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Solution

The fourth proportional to 13,729.88, 18,948.72 and 7,682.32 is: 10,602.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.88 : 18,948.72 = 7,682.32 : x
  2. Step 2: Convert to fraction form
    13,729.88/18,948.72 = 7,682.32/x
  3. Step 3: Cross multiply
    13,729.88x = 18,948.72 × 7,682.32
  4. Step 4: Simplify right side
    13,729.88x = 145,570,130.63
  5. Step 5: Solve for x
    x = 145,570,130.63/13,729.88
  6. Step 6: Final answer
    x = 10,602.43

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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.