Home / 14,319.42-21,479.82-11,815.98

Finding the Fourth Proportional to 14,319.42, 21,479.82 and 11,815.98

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Solution

The fourth proportional to 14,319.42, 21,479.82 and 11,815.98 is: 17,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.42 : 21,479.82 = 11,815.98 : x
  2. Step 2: Convert to fraction form
    14,319.42/21,479.82 = 11,815.98/x
  3. Step 3: Cross multiply
    14,319.42x = 21,479.82 × 11,815.98
  4. Step 4: Simplify right side
    14,319.42x = 253,805,123.52
  5. Step 5: Solve for x
    x = 253,805,123.52/14,319.42
  6. Step 6: Final answer
    x = 17,724.54

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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.