Home / 22,260.99-30,720.16-12,189.43

Finding the Fourth Proportional to 22,260.99, 30,720.16 and 12,189.43

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Solution

The fourth proportional to 22,260.99, 30,720.16 and 12,189.43 is: 16,821.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,260.99 : 30,720.16 = 12,189.43 : x
  2. Step 2: Convert to fraction form
    22,260.99/30,720.16 = 12,189.43/x
  3. Step 3: Cross multiply
    22,260.99x = 30,720.16 × 12,189.43
  4. Step 4: Simplify right side
    22,260.99x = 374,461,239.91
  5. Step 5: Solve for x
    x = 374,461,239.91/22,260.99
  6. Step 6: Final answer
    x = 16,821.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.