Home / 27,143.94-40,688.96-12,887.42

Finding the Fourth Proportional to 27,143.94, 40,688.96 and 12,887.42

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Solution

The fourth proportional to 27,143.94, 40,688.96 and 12,887.42 is: 19,318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,143.94 : 40,688.96 = 12,887.42 : x
  2. Step 2: Convert to fraction form
    27,143.94/40,688.96 = 12,887.42/x
  3. Step 3: Cross multiply
    27,143.94x = 40,688.96 × 12,887.42
  4. Step 4: Simplify right side
    27,143.94x = 524,375,449.00
  5. Step 5: Solve for x
    x = 524,375,449.00/27,143.94
  6. Step 6: Final answer
    x = 19,318.32

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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.