Home / 10,969.20-16,453.80-10,191.60

Finding the Fourth Proportional to 10,969.20, 16,453.80 and 10,191.60

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Solution

The fourth proportional to 10,969.20, 16,453.80 and 10,191.60 is: 15,287.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.20 : 16,453.80 = 10,191.60 : x
  2. Step 2: Convert to fraction form
    10,969.20/16,453.80 = 10,191.60/x
  3. Step 3: Cross multiply
    10,969.20x = 16,453.80 × 10,191.60
  4. Step 4: Simplify right side
    10,969.20x = 167,690,548.08
  5. Step 5: Solve for x
    x = 167,690,548.08/10,969.20
  6. Step 6: Final answer
    x = 15,287.40

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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.