Home / 43,109.84-64,664.64-11,945.12

Finding the Fourth Proportional to 43,109.84, 64,664.64 and 11,945.12

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Solution

The fourth proportional to 43,109.84, 64,664.64 and 11,945.12 is: 17,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,109.84 : 64,664.64 = 11,945.12 : x
  2. Step 2: Convert to fraction form
    43,109.84/64,664.64 = 11,945.12/x
  3. Step 3: Cross multiply
    43,109.84x = 64,664.64 × 11,945.12
  4. Step 4: Simplify right side
    43,109.84x = 772,426,884.56
  5. Step 5: Solve for x
    x = 772,426,884.56/43,109.84
  6. Step 6: Final answer
    x = 17,917.65

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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.