Home / 43,109.12-64,661.88-11,943.56

Finding the Fourth Proportional to 43,109.12, 64,661.88 and 11,943.56

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Solution

The fourth proportional to 43,109.12, 64,661.88 and 11,943.56 is: 17,914.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,109.12 : 64,661.88 = 11,943.56 : x
  2. Step 2: Convert to fraction form
    43,109.12/64,661.88 = 11,943.56/x
  3. Step 3: Cross multiply
    43,109.12x = 64,661.88 × 11,943.56
  4. Step 4: Simplify right side
    43,109.12x = 772,293,043.49
  5. Step 5: Solve for x
    x = 772,293,043.49/43,109.12
  6. Step 6: Final answer
    x = 17,914.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.