Home / 20,764.40-31,068.84-11,536.88

Finding the Fourth Proportional to 20,764.40, 31,068.84 and 11,536.88

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Solution

The fourth proportional to 20,764.40, 31,068.84 and 11,536.88 is: 17,262.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.40 : 31,068.84 = 11,536.88 : x
  2. Step 2: Convert to fraction form
    20,764.40/31,068.84 = 11,536.88/x
  3. Step 3: Cross multiply
    20,764.40x = 31,068.84 × 11,536.88
  4. Step 4: Simplify right side
    20,764.40x = 358,437,478.82
  5. Step 5: Solve for x
    x = 358,437,478.82/20,764.40
  6. Step 6: Final answer
    x = 17,262.12

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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.