Home / 20,443.86-28,215.14-12,484.41

Finding the Fourth Proportional to 20,443.86, 28,215.14 and 12,484.41

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Solution

The fourth proportional to 20,443.86, 28,215.14 and 12,484.41 is: 17,230.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.86 : 28,215.14 = 12,484.41 : x
  2. Step 2: Convert to fraction form
    20,443.86/28,215.14 = 12,484.41/x
  3. Step 3: Cross multiply
    20,443.86x = 28,215.14 × 12,484.41
  4. Step 4: Simplify right side
    20,443.86x = 352,249,375.97
  5. Step 5: Solve for x
    x = 352,249,375.97/20,443.86
  6. Step 6: Final answer
    x = 17,230.08

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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.