Home / 27,678.12-41,484.66-12,855.79

Finding the Fourth Proportional to 27,678.12, 41,484.66 and 12,855.79

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Solution

The fourth proportional to 27,678.12, 41,484.66 and 12,855.79 is: 19,268.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,678.12 : 41,484.66 = 12,855.79 : x
  2. Step 2: Convert to fraction form
    27,678.12/41,484.66 = 12,855.79/x
  3. Step 3: Cross multiply
    27,678.12x = 41,484.66 × 12,855.79
  4. Step 4: Simplify right side
    27,678.12x = 533,318,077.18
  5. Step 5: Solve for x
    x = 533,318,077.18/27,678.12
  6. Step 6: Final answer
    x = 19,268.58

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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.