Home / 20,453.56-28,217.10-12,893.92

Finding the Fourth Proportional to 20,453.56, 28,217.10 and 12,893.92

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Solution

The fourth proportional to 20,453.56, 28,217.10 and 12,893.92 is: 17,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.56 : 28,217.10 = 12,893.92 : x
  2. Step 2: Convert to fraction form
    20,453.56/28,217.10 = 12,893.92/x
  3. Step 3: Cross multiply
    20,453.56x = 28,217.10 × 12,893.92
  4. Step 4: Simplify right side
    20,453.56x = 363,829,030.03
  5. Step 5: Solve for x
    x = 363,829,030.03/20,453.56
  6. Step 6: Final answer
    x = 17,788.05

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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.