Home / 27,112.61-40,670.84-8,390.21

Finding the Fourth Proportional to 27,112.61, 40,670.84 and 8,390.21

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Solution

The fourth proportional to 27,112.61, 40,670.84 and 8,390.21 is: 12,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,112.61 : 40,670.84 = 8,390.21 : x
  2. Step 2: Convert to fraction form
    27,112.61/40,670.84 = 8,390.21/x
  3. Step 3: Cross multiply
    27,112.61x = 40,670.84 × 8,390.21
  4. Step 4: Simplify right side
    27,112.61x = 341,236,706.10
  5. Step 5: Solve for x
    x = 341,236,706.10/27,112.61
  6. Step 6: Final answer
    x = 12,585.90

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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.