Home / 39,716.12-54,808.63-21,811.50

Finding the Fourth Proportional to 39,716.12, 54,808.63 and 21,811.50

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Solution

The fourth proportional to 39,716.12, 54,808.63 and 21,811.50 is: 30,100.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.12 : 54,808.63 = 21,811.50 : x
  2. Step 2: Convert to fraction form
    39,716.12/54,808.63 = 21,811.50/x
  3. Step 3: Cross multiply
    39,716.12x = 54,808.63 × 21,811.50
  4. Step 4: Simplify right side
    39,716.12x = 1,195,458,378.72
  5. Step 5: Solve for x
    x = 1,195,458,378.72/39,716.12
  6. Step 6: Final answer
    x = 30,100.08

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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.