Home / 20,503.67-28,294.11-12,546.63

Finding the Fourth Proportional to 20,503.67, 28,294.11 and 12,546.63

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Solution

The fourth proportional to 20,503.67, 28,294.11 and 12,546.63 is: 17,313.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.67 : 28,294.11 = 12,546.63 : x
  2. Step 2: Convert to fraction form
    20,503.67/28,294.11 = 12,546.63/x
  3. Step 3: Cross multiply
    20,503.67x = 28,294.11 × 12,546.63
  4. Step 4: Simplify right side
    20,503.67x = 354,995,729.35
  5. Step 5: Solve for x
    x = 354,995,729.35/20,503.67
  6. Step 6: Final answer
    x = 17,313.77

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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.