Home / 21,020.11-31,539.45-11,022.47

Finding the Fourth Proportional to 21,020.11, 31,539.45 and 11,022.47

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Solution

The fourth proportional to 21,020.11, 31,539.45 and 11,022.47 is: 16,538.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.11 : 31,539.45 = 11,022.47 : x
  2. Step 2: Convert to fraction form
    21,020.11/31,539.45 = 11,022.47/x
  3. Step 3: Cross multiply
    21,020.11x = 31,539.45 × 11,022.47
  4. Step 4: Simplify right side
    21,020.11x = 347,642,678.96
  5. Step 5: Solve for x
    x = 347,642,678.96/21,020.11
  6. Step 6: Final answer
    x = 16,538.58

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1.5x scale

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.