Home / 20,668.96-28,141.57-20,603.35

Finding the Fourth Proportional to 20,668.96, 28,141.57 and 20,603.35

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Solution

The fourth proportional to 20,668.96, 28,141.57 and 20,603.35 is: 28,052.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.96 : 28,141.57 = 20,603.35 : x
  2. Step 2: Convert to fraction form
    20,668.96/28,141.57 = 20,603.35/x
  3. Step 3: Cross multiply
    20,668.96x = 28,141.57 × 20,603.35
  4. Step 4: Simplify right side
    20,668.96x = 579,810,616.26
  5. Step 5: Solve for x
    x = 579,810,616.26/20,668.96
  6. Step 6: Final answer
    x = 28,052.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.