Home / 22,260.89-30,720.08-12,189.99

Finding the Fourth Proportional to 22,260.89, 30,720.08 and 12,189.99

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Solution

The fourth proportional to 22,260.89, 30,720.08 and 12,189.99 is: 16,822.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,260.89 : 30,720.08 = 12,189.99 : x
  2. Step 2: Convert to fraction form
    22,260.89/30,720.08 = 12,189.99/x
  3. Step 3: Cross multiply
    22,260.89x = 30,720.08 × 12,189.99
  4. Step 4: Simplify right side
    22,260.89x = 374,477,407.05
  5. Step 5: Solve for x
    x = 374,477,407.05/22,260.89
  6. Step 6: Final answer
    x = 16,822.22

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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.