Home / 20,289.61-27,999.39-11,337.49

Finding the Fourth Proportional to 20,289.61, 27,999.39 and 11,337.49

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Solution

The fourth proportional to 20,289.61, 27,999.39 and 11,337.49 is: 15,645.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.61 : 27,999.39 = 11,337.49 : x
  2. Step 2: Convert to fraction form
    20,289.61/27,999.39 = 11,337.49/x
  3. Step 3: Cross multiply
    20,289.61x = 27,999.39 × 11,337.49
  4. Step 4: Simplify right side
    20,289.61x = 317,442,804.13
  5. Step 5: Solve for x
    x = 317,442,804.13/20,289.61
  6. Step 6: Final answer
    x = 15,645.58

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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.