Home / 13,245.25-18,278.46-7,276.93

Finding the Fourth Proportional to 13,245.25, 18,278.46 and 7,276.93

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Solution

The fourth proportional to 13,245.25, 18,278.46 and 7,276.93 is: 10,042.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.25 : 18,278.46 = 7,276.93 : x
  2. Step 2: Convert to fraction form
    13,245.25/18,278.46 = 7,276.93/x
  3. Step 3: Cross multiply
    13,245.25x = 18,278.46 × 7,276.93
  4. Step 4: Simplify right side
    13,245.25x = 133,011,073.93
  5. Step 5: Solve for x
    x = 133,011,073.93/13,245.25
  6. Step 6: Final answer
    x = 10,042.17

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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.