Home / 20,628.22-28,480.06-14,178.44

Finding the Fourth Proportional to 20,628.22, 28,480.06 and 14,178.44

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Solution

The fourth proportional to 20,628.22, 28,480.06 and 14,178.44 is: 19,575.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.22 : 28,480.06 = 14,178.44 : x
  2. Step 2: Convert to fraction form
    20,628.22/28,480.06 = 14,178.44/x
  3. Step 3: Cross multiply
    20,628.22x = 28,480.06 × 14,178.44
  4. Step 4: Simplify right side
    20,628.22x = 403,802,831.08
  5. Step 5: Solve for x
    x = 403,802,831.08/20,628.22
  6. Step 6: Final answer
    x = 19,575.26

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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.