Home / 20,406.74-28,161.41-11,454.35

Finding the Fourth Proportional to 20,406.74, 28,161.41 and 11,454.35

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Solution

The fourth proportional to 20,406.74, 28,161.41 and 11,454.35 is: 15,807.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.74 : 28,161.41 = 11,454.35 : x
  2. Step 2: Convert to fraction form
    20,406.74/28,161.41 = 11,454.35/x
  3. Step 3: Cross multiply
    20,406.74x = 28,161.41 × 11,454.35
  4. Step 4: Simplify right side
    20,406.74x = 322,570,448.55
  5. Step 5: Solve for x
    x = 322,570,448.55/20,406.74
  6. Step 6: Final answer
    x = 15,807.06

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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.