Home / 20,973.18-28,942.41-11,900.19

Finding the Fourth Proportional to 20,973.18, 28,942.41 and 11,900.19

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Solution

The fourth proportional to 20,973.18, 28,942.41 and 11,900.19 is: 16,421.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.18 : 28,942.41 = 11,900.19 : x
  2. Step 2: Convert to fraction form
    20,973.18/28,942.41 = 11,900.19/x
  3. Step 3: Cross multiply
    20,973.18x = 28,942.41 × 11,900.19
  4. Step 4: Simplify right side
    20,973.18x = 344,420,178.06
  5. Step 5: Solve for x
    x = 344,420,178.06/20,973.18
  6. Step 6: Final answer
    x = 16,421.93

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1.5x scale

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.