Home / 27,128.79-40,673.75-12,330.09

Finding the Fourth Proportional to 27,128.79, 40,673.75 and 12,330.09

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Solution

The fourth proportional to 27,128.79, 40,673.75 and 12,330.09 is: 18,486.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.79 : 40,673.75 = 12,330.09 : x
  2. Step 2: Convert to fraction form
    27,128.79/40,673.75 = 12,330.09/x
  3. Step 3: Cross multiply
    27,128.79x = 40,673.75 × 12,330.09
  4. Step 4: Simplify right side
    27,128.79x = 501,510,936.49
  5. Step 5: Solve for x
    x = 501,510,936.49/27,128.79
  6. Step 6: Final answer
    x = 18,486.30

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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.