Home / 30,328.62-45,518.49-12,811.02

Finding the Fourth Proportional to 30,328.62, 45,518.49 and 12,811.02

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Solution

The fourth proportional to 30,328.62, 45,518.49 and 12,811.02 is: 19,227.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,328.62 : 45,518.49 = 12,811.02 : x
  2. Step 2: Convert to fraction form
    30,328.62/45,518.49 = 12,811.02/x
  3. Step 3: Cross multiply
    30,328.62x = 45,518.49 × 12,811.02
  4. Step 4: Simplify right side
    30,328.62x = 583,138,285.76
  5. Step 5: Solve for x
    x = 583,138,285.76/30,328.62
  6. Step 6: Final answer
    x = 19,227.33

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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.