Home / 13,536.12-18,678.46-9,290.84

Finding the Fourth Proportional to 13,536.12, 18,678.46 and 9,290.84

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Solution

The fourth proportional to 13,536.12, 18,678.46 and 9,290.84 is: 12,820.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,536.12 : 18,678.46 = 9,290.84 : x
  2. Step 2: Convert to fraction form
    13,536.12/18,678.46 = 9,290.84/x
  3. Step 3: Cross multiply
    13,536.12x = 18,678.46 × 9,290.84
  4. Step 4: Simplify right side
    13,536.12x = 173,538,583.31
  5. Step 5: Solve for x
    x = 173,538,583.31/13,536.12
  6. Step 6: Final answer
    x = 12,820.41

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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.