Home / 13,276.28-18,321.48-7,308.56

Finding the Fourth Proportional to 13,276.28, 18,321.48 and 7,308.56

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Solution

The fourth proportional to 13,276.28, 18,321.48 and 7,308.56 is: 10,085.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.28 : 18,321.48 = 7,308.56 : x
  2. Step 2: Convert to fraction form
    13,276.28/18,321.48 = 7,308.56/x
  3. Step 3: Cross multiply
    13,276.28x = 18,321.48 × 7,308.56
  4. Step 4: Simplify right side
    13,276.28x = 133,903,635.87
  5. Step 5: Solve for x
    x = 133,903,635.87/13,276.28
  6. Step 6: Final answer
    x = 10,085.93

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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.