Home / 20,412.92-28,169.59-11,460.20

Finding the Fourth Proportional to 20,412.92, 28,169.59 and 11,460.20

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Solution

The fourth proportional to 20,412.92, 28,169.59 and 11,460.20 is: 15,814.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.92 : 28,169.59 = 11,460.20 : x
  2. Step 2: Convert to fraction form
    20,412.92/28,169.59 = 11,460.20/x
  3. Step 3: Cross multiply
    20,412.92x = 28,169.59 × 11,460.20
  4. Step 4: Simplify right side
    20,412.92x = 322,829,135.32
  5. Step 5: Solve for x
    x = 322,829,135.32/20,412.92
  6. Step 6: Final answer
    x = 15,814.94

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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.