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Finding the Fourth Proportional to 26,828.20, 40,209.90 and 13,673.80

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Solution

The fourth proportional to 26,828.20, 40,209.90 and 13,673.80 is: 20,494.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,828.20 : 40,209.90 = 13,673.80 : x
  2. Step 2: Convert to fraction form
    26,828.20/40,209.90 = 13,673.80/x
  3. Step 3: Cross multiply
    26,828.20x = 40,209.90 × 13,673.80
  4. Step 4: Simplify right side
    26,828.20x = 549,822,130.62
  5. Step 5: Solve for x
    x = 549,822,130.62/26,828.20
  6. Step 6: Final answer
    x = 20,494.19

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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.