Home / 12,619.20-17,412.96-7,313.76

Finding the Fourth Proportional to 12,619.20, 17,412.96 and 7,313.76

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Solution

The fourth proportional to 12,619.20, 17,412.96 and 7,313.76 is: 10,092.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.20 : 17,412.96 = 7,313.76 : x
  2. Step 2: Convert to fraction form
    12,619.20/17,412.96 = 7,313.76/x
  3. Step 3: Cross multiply
    12,619.20x = 17,412.96 × 7,313.76
  4. Step 4: Simplify right side
    12,619.20x = 127,354,210.33
  5. Step 5: Solve for x
    x = 127,354,210.33/12,619.20
  6. Step 6: Final answer
    x = 10,092.10

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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.