Home / 12,568.48-17,357.84-11,518.56

Finding the Fourth Proportional to 12,568.48, 17,357.84 and 11,518.56

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Solution

The fourth proportional to 12,568.48, 17,357.84 and 11,518.56 is: 15,907.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,568.48 : 17,357.84 = 11,518.56 : x
  2. Step 2: Convert to fraction form
    12,568.48/17,357.84 = 11,518.56/x
  3. Step 3: Cross multiply
    12,568.48x = 17,357.84 × 11,518.56
  4. Step 4: Simplify right side
    12,568.48x = 199,937,321.51
  5. Step 5: Solve for x
    x = 199,937,321.51/12,568.48
  6. Step 6: Final answer
    x = 15,907.84

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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.