Home / 20,603.36-28,405.79-20,324.52

Finding the Fourth Proportional to 20,603.36, 28,405.79 and 20,324.52

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Solution

The fourth proportional to 20,603.36, 28,405.79 and 20,324.52 is: 28,021.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.36 : 28,405.79 = 20,324.52 : x
  2. Step 2: Convert to fraction form
    20,603.36/28,405.79 = 20,324.52/x
  3. Step 3: Cross multiply
    20,603.36x = 28,405.79 × 20,324.52
  4. Step 4: Simplify right side
    20,603.36x = 577,334,021.57
  5. Step 5: Solve for x
    x = 577,334,021.57/20,603.36
  6. Step 6: Final answer
    x = 28,021.35

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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.