Home / 13,666.25-18,860.85-8,364.60

Finding the Fourth Proportional to 13,666.25, 18,860.85 and 8,364.60

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Solution

The fourth proportional to 13,666.25, 18,860.85 and 8,364.60 is: 11,544.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.25 : 18,860.85 = 8,364.60 : x
  2. Step 2: Convert to fraction form
    13,666.25/18,860.85 = 8,364.60/x
  3. Step 3: Cross multiply
    13,666.25x = 18,860.85 × 8,364.60
  4. Step 4: Simplify right side
    13,666.25x = 157,763,465.91
  5. Step 5: Solve for x
    x = 157,763,465.91/13,666.25
  6. Step 6: Final answer
    x = 11,544.02

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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.