Home / 20,412.27-28,169.37-11,460.02

Finding the Fourth Proportional to 20,412.27, 28,169.37 and 11,460.02

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Solution

The fourth proportional to 20,412.27, 28,169.37 and 11,460.02 is: 15,815.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.27 : 28,169.37 = 11,460.02 : x
  2. Step 2: Convert to fraction form
    20,412.27/28,169.37 = 11,460.02/x
  3. Step 3: Cross multiply
    20,412.27x = 28,169.37 × 11,460.02
  4. Step 4: Simplify right side
    20,412.27x = 322,821,402.74
  5. Step 5: Solve for x
    x = 322,821,402.74/20,412.27
  6. Step 6: Final answer
    x = 15,815.07

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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.