Home / 20,352.90-28,103.49-15,104.10

Finding the Fourth Proportional to 20,352.90, 28,103.49 and 15,104.10

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Solution

The fourth proportional to 20,352.90, 28,103.49 and 15,104.10 is: 20,855.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.90 : 28,103.49 = 15,104.10 : x
  2. Step 2: Convert to fraction form
    20,352.90/28,103.49 = 15,104.10/x
  3. Step 3: Cross multiply
    20,352.90x = 28,103.49 × 15,104.10
  4. Step 4: Simplify right side
    20,352.90x = 424,477,923.31
  5. Step 5: Solve for x
    x = 424,477,923.31/20,352.90
  6. Step 6: Final answer
    x = 20,855.89

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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.