Home / 20,622.93-28,457.91-12,125.33

Finding the Fourth Proportional to 20,622.93, 28,457.91 and 12,125.33

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Solution

The fourth proportional to 20,622.93, 28,457.91 and 12,125.33 is: 16,731.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.93 : 28,457.91 = 12,125.33 : x
  2. Step 2: Convert to fraction form
    20,622.93/28,457.91 = 12,125.33/x
  3. Step 3: Cross multiply
    20,622.93x = 28,457.91 × 12,125.33
  4. Step 4: Simplify right side
    20,622.93x = 345,061,407.57
  5. Step 5: Solve for x
    x = 345,061,407.57/20,622.93
  6. Step 6: Final answer
    x = 16,731.93

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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.