Home / 20,395.16-30,543.52-11,603.42

Finding the Fourth Proportional to 20,395.16, 30,543.52 and 11,603.42

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Solution

The fourth proportional to 20,395.16, 30,543.52 and 11,603.42 is: 17,377.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,395.16 : 30,543.52 = 11,603.42 : x
  2. Step 2: Convert to fraction form
    20,395.16/30,543.52 = 11,603.42/x
  3. Step 3: Cross multiply
    20,395.16x = 30,543.52 × 11,603.42
  4. Step 4: Simplify right side
    20,395.16x = 354,409,290.84
  5. Step 5: Solve for x
    x = 354,409,290.84/20,395.16
  6. Step 6: Final answer
    x = 17,377.13

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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.