Home / 15,534.99-21,429.21-10,992.57

Finding the Fourth Proportional to 15,534.99, 21,429.21 and 10,992.57

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Solution

The fourth proportional to 15,534.99, 21,429.21 and 10,992.57 is: 15,163.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.99 : 21,429.21 = 10,992.57 : x
  2. Step 2: Convert to fraction form
    15,534.99/21,429.21 = 10,992.57/x
  3. Step 3: Cross multiply
    15,534.99x = 21,429.21 × 10,992.57
  4. Step 4: Simplify right side
    15,534.99x = 235,562,090.97
  5. Step 5: Solve for x
    x = 235,562,090.97/15,534.99
  6. Step 6: Final answer
    x = 15,163.32

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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.