Home / 27,115.81-40,664.34-12,882.64

Finding the Fourth Proportional to 27,115.81, 40,664.34 and 12,882.64

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Solution

The fourth proportional to 27,115.81, 40,664.34 and 12,882.64 is: 19,319.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,115.81 : 40,664.34 = 12,882.64 : x
  2. Step 2: Convert to fraction form
    27,115.81/40,664.34 = 12,882.64/x
  3. Step 3: Cross multiply
    27,115.81x = 40,664.34 × 12,882.64
  4. Step 4: Simplify right side
    27,115.81x = 523,864,053.06
  5. Step 5: Solve for x
    x = 523,864,053.06/27,115.81
  6. Step 6: Final answer
    x = 19,319.51

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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.