Home / 20,801.79-28,703.14-11,849.47

Finding the Fourth Proportional to 20,801.79, 28,703.14 and 11,849.47

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Solution

The fourth proportional to 20,801.79, 28,703.14 and 11,849.47 is: 16,350.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.79 : 28,703.14 = 11,849.47 : x
  2. Step 2: Convert to fraction form
    20,801.79/28,703.14 = 11,849.47/x
  3. Step 3: Cross multiply
    20,801.79x = 28,703.14 × 11,849.47
  4. Step 4: Simplify right side
    20,801.79x = 340,116,996.34
  5. Step 5: Solve for x
    x = 340,116,996.34/20,801.79
  6. Step 6: Final answer
    x = 16,350.37

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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.