Home / 27,192.16-40,788.32-12,390.72

Finding the Fourth Proportional to 27,192.16, 40,788.32 and 12,390.72

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Solution

The fourth proportional to 27,192.16, 40,788.32 and 12,390.72 is: 18,586.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,192.16 : 40,788.32 = 12,390.72 : x
  2. Step 2: Convert to fraction form
    27,192.16/40,788.32 = 12,390.72/x
  3. Step 3: Cross multiply
    27,192.16x = 40,788.32 × 12,390.72
  4. Step 4: Simplify right side
    27,192.16x = 505,396,652.39
  5. Step 5: Solve for x
    x = 505,396,652.39/27,192.16
  6. Step 6: Final answer
    x = 18,586.12

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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.