Home / 20,503.35-28,294.50-11,553.74

Finding the Fourth Proportional to 20,503.35, 28,294.50 and 11,553.74

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Solution

The fourth proportional to 20,503.35, 28,294.50 and 11,553.74 is: 15,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.35 : 28,294.50 = 11,553.74 : x
  2. Step 2: Convert to fraction form
    20,503.35/28,294.50 = 11,553.74/x
  3. Step 3: Cross multiply
    20,503.35x = 28,294.50 × 11,553.74
  4. Step 4: Simplify right side
    20,503.35x = 326,907,154.96
  5. Step 5: Solve for x
    x = 326,907,154.96/20,503.35
  6. Step 6: Final answer
    x = 15,944.08

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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.