Home / 18,646.56-25,716.96-13,605.12

Finding the Fourth Proportional to 18,646.56, 25,716.96 and 13,605.12

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Solution

The fourth proportional to 18,646.56, 25,716.96 and 13,605.12 is: 18,763.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.56 : 25,716.96 = 13,605.12 : x
  2. Step 2: Convert to fraction form
    18,646.56/25,716.96 = 13,605.12/x
  3. Step 3: Cross multiply
    18,646.56x = 25,716.96 × 13,605.12
  4. Step 4: Simplify right side
    18,646.56x = 349,882,326.84
  5. Step 5: Solve for x
    x = 349,882,326.84/18,646.56
  6. Step 6: Final answer
    x = 18,763.91

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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.