Home / 13,259.20-18,287.04-11,662.40

Finding the Fourth Proportional to 13,259.20, 18,287.04 and 11,662.40

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Solution

The fourth proportional to 13,259.20, 18,287.04 and 11,662.40 is: 16,084.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.20 : 18,287.04 = 11,662.40 : x
  2. Step 2: Convert to fraction form
    13,259.20/18,287.04 = 11,662.40/x
  3. Step 3: Cross multiply
    13,259.20x = 18,287.04 × 11,662.40
  4. Step 4: Simplify right side
    13,259.20x = 213,270,775.30
  5. Step 5: Solve for x
    x = 213,270,775.30/13,259.20
  6. Step 6: Final answer
    x = 16,084.74

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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.