Home / 14,121.20-19,447.80-13,815.08

Finding the Fourth Proportional to 14,121.20, 19,447.80 and 13,815.08

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Solution

The fourth proportional to 14,121.20, 19,447.80 and 13,815.08 is: 19,026.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.20 : 19,447.80 = 13,815.08 : x
  2. Step 2: Convert to fraction form
    14,121.20/19,447.80 = 13,815.08/x
  3. Step 3: Cross multiply
    14,121.20x = 19,447.80 × 13,815.08
  4. Step 4: Simplify right side
    14,121.20x = 268,672,912.82
  5. Step 5: Solve for x
    x = 268,672,912.82/14,121.20
  6. Step 6: Final answer
    x = 19,026.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.