Home / 13,279.72-19,762.79-12,836.84

Finding the Fourth Proportional to 13,279.72, 19,762.79 and 12,836.84

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Solution

The fourth proportional to 13,279.72, 19,762.79 and 12,836.84 is: 19,103.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.72 : 19,762.79 = 12,836.84 : x
  2. Step 2: Convert to fraction form
    13,279.72/19,762.79 = 12,836.84/x
  3. Step 3: Cross multiply
    13,279.72x = 19,762.79 × 12,836.84
  4. Step 4: Simplify right side
    13,279.72x = 253,691,773.18
  5. Step 5: Solve for x
    x = 253,691,773.18/13,279.72
  6. Step 6: Final answer
    x = 19,103.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.