Home / 27,276.42-40,890.03-18,960.36

Finding the Fourth Proportional to 27,276.42, 40,890.03 and 18,960.36

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Solution

The fourth proportional to 27,276.42, 40,890.03 and 18,960.36 is: 28,423.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,276.42 : 40,890.03 = 18,960.36 : x
  2. Step 2: Convert to fraction form
    27,276.42/40,890.03 = 18,960.36/x
  3. Step 3: Cross multiply
    27,276.42x = 40,890.03 × 18,960.36
  4. Step 4: Simplify right side
    27,276.42x = 775,289,689.21
  5. Step 5: Solve for x
    x = 775,289,689.21/27,276.42
  6. Step 6: Final answer
    x = 28,423.44

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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.