Home / 21,106.44-31,670.01-13,206.96

Finding the Fourth Proportional to 21,106.44, 31,670.01 and 13,206.96

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Solution

The fourth proportional to 21,106.44, 31,670.01 and 13,206.96 is: 19,816.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.44 : 31,670.01 = 13,206.96 : x
  2. Step 2: Convert to fraction form
    21,106.44/31,670.01 = 13,206.96/x
  3. Step 3: Cross multiply
    21,106.44x = 31,670.01 × 13,206.96
  4. Step 4: Simplify right side
    21,106.44x = 418,264,555.27
  5. Step 5: Solve for x
    x = 418,264,555.27/21,106.44
  6. Step 6: Final answer
    x = 19,816.92

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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.