Home / 13,808.40-20,672.10-12,383.34

Finding the Fourth Proportional to 13,808.40, 20,672.10 and 12,383.34

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Solution

The fourth proportional to 13,808.40, 20,672.10 and 12,383.34 is: 18,538.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.40 : 20,672.10 = 12,383.34 : x
  2. Step 2: Convert to fraction form
    13,808.40/20,672.10 = 12,383.34/x
  3. Step 3: Cross multiply
    13,808.40x = 20,672.10 × 12,383.34
  4. Step 4: Simplify right side
    13,808.40x = 255,989,642.81
  5. Step 5: Solve for x
    x = 255,989,642.81/13,808.40
  6. Step 6: Final answer
    x = 18,538.69

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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.