Home / 20,412.94-28,169.54-11,459.62

Finding the Fourth Proportional to 20,412.94, 28,169.54 and 11,459.62

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Solution

The fourth proportional to 20,412.94, 28,169.54 and 11,459.62 is: 15,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.94 : 28,169.54 = 11,459.62 : x
  2. Step 2: Convert to fraction form
    20,412.94/28,169.54 = 11,459.62/x
  3. Step 3: Cross multiply
    20,412.94x = 28,169.54 × 11,459.62
  4. Step 4: Simplify right side
    20,412.94x = 322,812,223.97
  5. Step 5: Solve for x
    x = 322,812,223.97/20,412.94
  6. Step 6: Final answer
    x = 15,814.10

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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.