Home / 13,867.10-20,818.53-11,905.34

Finding the Fourth Proportional to 13,867.10, 20,818.53 and 11,905.34

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Solution

The fourth proportional to 13,867.10, 20,818.53 and 11,905.34 is: 17,873.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,867.10 : 20,818.53 = 11,905.34 : x
  2. Step 2: Convert to fraction form
    13,867.10/20,818.53 = 11,905.34/x
  3. Step 3: Cross multiply
    13,867.10x = 20,818.53 × 11,905.34
  4. Step 4: Simplify right side
    13,867.10x = 247,851,677.95
  5. Step 5: Solve for x
    x = 247,851,677.95/13,867.10
  6. Step 6: Final answer
    x = 17,873.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.