Home / 20,867.63-28,807.31-11,913.41

Finding the Fourth Proportional to 20,867.63, 28,807.31 and 11,913.41

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Solution

The fourth proportional to 20,867.63, 28,807.31 and 11,913.41 is: 16,446.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.63 : 28,807.31 = 11,913.41 : x
  2. Step 2: Convert to fraction form
    20,867.63/28,807.31 = 11,913.41/x
  3. Step 3: Cross multiply
    20,867.63x = 28,807.31 × 11,913.41
  4. Step 4: Simplify right side
    20,867.63x = 343,193,091.42
  5. Step 5: Solve for x
    x = 343,193,091.42/20,867.63
  6. Step 6: Final answer
    x = 16,446.19

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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.