Home / 13,690.44-18,905.40-12,953.88

Finding the Fourth Proportional to 13,690.44, 18,905.40 and 12,953.88

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Solution

The fourth proportional to 13,690.44, 18,905.40 and 12,953.88 is: 17,888.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,690.44 : 18,905.40 = 12,953.88 : x
  2. Step 2: Convert to fraction form
    13,690.44/18,905.40 = 12,953.88/x
  3. Step 3: Cross multiply
    13,690.44x = 18,905.40 × 12,953.88
  4. Step 4: Simplify right side
    13,690.44x = 244,898,282.95
  5. Step 5: Solve for x
    x = 244,898,282.95/13,690.44
  6. Step 6: Final answer
    x = 17,888.27

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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.