Home / 13,888.45-20,784.18-11,360.42

Finding the Fourth Proportional to 13,888.45, 20,784.18 and 11,360.42

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Solution

The fourth proportional to 13,888.45, 20,784.18 and 11,360.42 is: 17,000.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.45 : 20,784.18 = 11,360.42 : x
  2. Step 2: Convert to fraction form
    13,888.45/20,784.18 = 11,360.42/x
  3. Step 3: Cross multiply
    13,888.45x = 20,784.18 × 11,360.42
  4. Step 4: Simplify right side
    13,888.45x = 236,116,952.84
  5. Step 5: Solve for x
    x = 236,116,952.84/13,888.45
  6. Step 6: Final answer
    x = 17,000.96

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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.