Home / 20,412.69-28,168.61-11,460.03

Finding the Fourth Proportional to 20,412.69, 28,168.61 and 11,460.03

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Solution

The fourth proportional to 20,412.69, 28,168.61 and 11,460.03 is: 15,814.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.69 : 28,168.61 = 11,460.03 : x
  2. Step 2: Convert to fraction form
    20,412.69/28,168.61 = 11,460.03/x
  3. Step 3: Cross multiply
    20,412.69x = 28,168.61 × 11,460.03
  4. Step 4: Simplify right side
    20,412.69x = 322,813,058.36
  5. Step 5: Solve for x
    x = 322,813,058.36/20,412.69
  6. Step 6: Final answer
    x = 15,814.33

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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.