Home / 30,212.07-45,318.12-11,487.78

Finding the Fourth Proportional to 30,212.07, 45,318.12 and 11,487.78

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Solution

The fourth proportional to 30,212.07, 45,318.12 and 11,487.78 is: 17,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,212.07 : 45,318.12 = 11,487.78 : x
  2. Step 2: Convert to fraction form
    30,212.07/45,318.12 = 11,487.78/x
  3. Step 3: Cross multiply
    30,212.07x = 45,318.12 × 11,487.78
  4. Step 4: Simplify right side
    30,212.07x = 520,604,549.49
  5. Step 5: Solve for x
    x = 520,604,549.49/30,212.07
  6. Step 6: Final answer
    x = 17,231.68

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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.