Home / 20,603.18-30,877.72-11,722.58

Finding the Fourth Proportional to 20,603.18, 30,877.72 and 11,722.58

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Solution

The fourth proportional to 20,603.18, 30,877.72 and 11,722.58 is: 17,568.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.18 : 30,877.72 = 11,722.58 : x
  2. Step 2: Convert to fraction form
    20,603.18/30,877.72 = 11,722.58/x
  3. Step 3: Cross multiply
    20,603.18x = 30,877.72 × 11,722.58
  4. Step 4: Simplify right side
    20,603.18x = 361,966,542.92
  5. Step 5: Solve for x
    x = 361,966,542.92/20,603.18
  6. Step 6: Final answer
    x = 17,568.48

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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.