Home / 27,140.90-40,717.22-8,420.57

Finding the Fourth Proportional to 27,140.90, 40,717.22 and 8,420.57

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Solution

The fourth proportional to 27,140.90, 40,717.22 and 8,420.57 is: 12,632.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,140.90 : 40,717.22 = 8,420.57 : x
  2. Step 2: Convert to fraction form
    27,140.90/40,717.22 = 8,420.57/x
  3. Step 3: Cross multiply
    27,140.90x = 40,717.22 × 8,420.57
  4. Step 4: Simplify right side
    27,140.90x = 342,862,201.22
  5. Step 5: Solve for x
    x = 342,862,201.22/27,140.90
  6. Step 6: Final answer
    x = 12,632.68

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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.