Home / 13,276.58-18,321.80-7,308.38

Finding the Fourth Proportional to 13,276.58, 18,321.80 and 7,308.38

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Solution

The fourth proportional to 13,276.58, 18,321.80 and 7,308.38 is: 10,085.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.58 : 18,321.80 = 7,308.38 : x
  2. Step 2: Convert to fraction form
    13,276.58/18,321.80 = 7,308.38/x
  3. Step 3: Cross multiply
    13,276.58x = 18,321.80 × 7,308.38
  4. Step 4: Simplify right side
    13,276.58x = 133,902,685.95
  5. Step 5: Solve for x
    x = 133,902,685.95/13,276.58
  6. Step 6: Final answer
    x = 10,085.63

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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.