Home / 12,756.24-19,163.52-9,987.12

Finding the Fourth Proportional to 12,756.24, 19,163.52 and 9,987.12

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Solution

The fourth proportional to 12,756.24, 19,163.52 and 9,987.12 is: 15,003.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.24 : 19,163.52 = 9,987.12 : x
  2. Step 2: Convert to fraction form
    12,756.24/19,163.52 = 9,987.12/x
  3. Step 3: Cross multiply
    12,756.24x = 19,163.52 × 9,987.12
  4. Step 4: Simplify right side
    12,756.24x = 191,388,373.86
  5. Step 5: Solve for x
    x = 191,388,373.86/12,756.24
  6. Step 6: Final answer
    x = 15,003.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.