Home / 26,421.54-39,638.38-8,890.90

Finding the Fourth Proportional to 26,421.54, 39,638.38 and 8,890.90

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Solution

The fourth proportional to 26,421.54, 39,638.38 and 8,890.90 is: 13,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,421.54 : 39,638.38 = 8,890.90 : x
  2. Step 2: Convert to fraction form
    26,421.54/39,638.38 = 8,890.90/x
  3. Step 3: Cross multiply
    26,421.54x = 39,638.38 × 8,890.90
  4. Step 4: Simplify right side
    26,421.54x = 352,420,872.74
  5. Step 5: Solve for x
    x = 352,420,872.74/26,421.54
  6. Step 6: Final answer
    x = 13,338.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.