Home / 12,621.40-17,416.26-7,317.88

Finding the Fourth Proportional to 12,621.40, 17,416.26 and 7,317.88

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Solution

The fourth proportional to 12,621.40, 17,416.26 and 7,317.88 is: 10,097.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.40 : 17,416.26 = 7,317.88 : x
  2. Step 2: Convert to fraction form
    12,621.40/17,416.26 = 7,317.88/x
  3. Step 3: Cross multiply
    12,621.40x = 17,416.26 × 7,317.88
  4. Step 4: Simplify right side
    12,621.40x = 127,450,100.73
  5. Step 5: Solve for x
    x = 127,450,100.73/12,621.40
  6. Step 6: Final answer
    x = 10,097.94

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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.