Home / 20,424.39-28,166.91-13,246.80

Finding the Fourth Proportional to 20,424.39, 28,166.91 and 13,246.80

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Solution

The fourth proportional to 20,424.39, 28,166.91 and 13,246.80 is: 18,268.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.39 : 28,166.91 = 13,246.80 : x
  2. Step 2: Convert to fraction form
    20,424.39/28,166.91 = 13,246.80/x
  3. Step 3: Cross multiply
    20,424.39x = 28,166.91 × 13,246.80
  4. Step 4: Simplify right side
    20,424.39x = 373,121,423.39
  5. Step 5: Solve for x
    x = 373,121,423.39/20,424.39
  6. Step 6: Final answer
    x = 18,268.42

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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.