Home / 28,816.88-43,214.90-12,178.19

Finding the Fourth Proportional to 28,816.88, 43,214.90 and 12,178.19

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Solution

The fourth proportional to 28,816.88, 43,214.90 and 12,178.19 is: 18,262.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,816.88 : 43,214.90 = 12,178.19 : x
  2. Step 2: Convert to fraction form
    28,816.88/43,214.90 = 12,178.19/x
  3. Step 3: Cross multiply
    28,816.88x = 43,214.90 × 12,178.19
  4. Step 4: Simplify right side
    28,816.88x = 526,279,401.51
  5. Step 5: Solve for x
    x = 526,279,401.51/28,816.88
  6. Step 6: Final answer
    x = 18,262.89

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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.