Home / 30,453.33-45,687.76-12,678.08

Finding the Fourth Proportional to 30,453.33, 45,687.76 and 12,678.08

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Solution

The fourth proportional to 30,453.33, 45,687.76 and 12,678.08 is: 19,020.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,453.33 : 45,687.76 = 12,678.08 : x
  2. Step 2: Convert to fraction form
    30,453.33/45,687.76 = 12,678.08/x
  3. Step 3: Cross multiply
    30,453.33x = 45,687.76 × 12,678.08
  4. Step 4: Simplify right side
    30,453.33x = 579,233,076.30
  5. Step 5: Solve for x
    x = 579,233,076.30/30,453.33
  6. Step 6: Final answer
    x = 19,020.36

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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.