Home / 30,121.96-45,162.78-11,632.36

Finding the Fourth Proportional to 30,121.96, 45,162.78 and 11,632.36

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Solution

The fourth proportional to 30,121.96, 45,162.78 and 11,632.36 is: 17,440.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.96 : 45,162.78 = 11,632.36 : x
  2. Step 2: Convert to fraction form
    30,121.96/45,162.78 = 11,632.36/x
  3. Step 3: Cross multiply
    30,121.96x = 45,162.78 × 11,632.36
  4. Step 4: Simplify right side
    30,121.96x = 525,349,715.56
  5. Step 5: Solve for x
    x = 525,349,715.56/30,121.96
  6. Step 6: Final answer
    x = 17,440.75

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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.