Home / 27,115.68-40,658.63-8,390.51

Finding the Fourth Proportional to 27,115.68, 40,658.63 and 8,390.51

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Solution

The fourth proportional to 27,115.68, 40,658.63 and 8,390.51 is: 12,581.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,115.68 : 40,658.63 = 8,390.51 : x
  2. Step 2: Convert to fraction form
    27,115.68/40,658.63 = 8,390.51/x
  3. Step 3: Cross multiply
    27,115.68x = 40,658.63 × 8,390.51
  4. Step 4: Simplify right side
    27,115.68x = 341,146,438.31
  5. Step 5: Solve for x
    x = 341,146,438.31/27,115.68
  6. Step 6: Final answer
    x = 12,581.15

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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.