Home / 13,730.25-18,942.33-8,955.75

Finding the Fourth Proportional to 13,730.25, 18,942.33 and 8,955.75

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Solution

The fourth proportional to 13,730.25, 18,942.33 and 8,955.75 is: 12,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.25 : 18,942.33 = 8,955.75 : x
  2. Step 2: Convert to fraction form
    13,730.25/18,942.33 = 8,955.75/x
  3. Step 3: Cross multiply
    13,730.25x = 18,942.33 × 8,955.75
  4. Step 4: Simplify right side
    13,730.25x = 169,642,771.90
  5. Step 5: Solve for x
    x = 169,642,771.90/13,730.25
  6. Step 6: Final answer
    x = 12,355.40

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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.