Home / 13,276.86-18,322.56-7,308.78

Finding the Fourth Proportional to 13,276.86, 18,322.56 and 7,308.78

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Solution

The fourth proportional to 13,276.86, 18,322.56 and 7,308.78 is: 10,086.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.86 : 18,322.56 = 7,308.78 : x
  2. Step 2: Convert to fraction form
    13,276.86/18,322.56 = 7,308.78/x
  3. Step 3: Cross multiply
    13,276.86x = 18,322.56 × 7,308.78
  4. Step 4: Simplify right side
    13,276.86x = 133,915,560.08
  5. Step 5: Solve for x
    x = 133,915,560.08/13,276.86
  6. Step 6: Final answer
    x = 10,086.39

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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.