Home / 13,191.28-18,204.08-8,154.32

Finding the Fourth Proportional to 13,191.28, 18,204.08 and 8,154.32

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Solution

The fourth proportional to 13,191.28, 18,204.08 and 8,154.32 is: 11,253.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.28 : 18,204.08 = 8,154.32 : x
  2. Step 2: Convert to fraction form
    13,191.28/18,204.08 = 8,154.32/x
  3. Step 3: Cross multiply
    13,191.28x = 18,204.08 × 8,154.32
  4. Step 4: Simplify right side
    13,191.28x = 148,441,893.63
  5. Step 5: Solve for x
    x = 148,441,893.63/13,191.28
  6. Step 6: Final answer
    x = 11,253.03

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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.