Home / 20,590.04-28,403.78-13,023.60

Finding the Fourth Proportional to 20,590.04, 28,403.78 and 13,023.60

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Solution

The fourth proportional to 20,590.04, 28,403.78 and 13,023.60 is: 17,965.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.04 : 28,403.78 = 13,023.60 : x
  2. Step 2: Convert to fraction form
    20,590.04/28,403.78 = 13,023.60/x
  3. Step 3: Cross multiply
    20,590.04x = 28,403.78 × 13,023.60
  4. Step 4: Simplify right side
    20,590.04x = 369,919,469.21
  5. Step 5: Solve for x
    x = 369,919,469.21/20,590.04
  6. Step 6: Final answer
    x = 17,965.94

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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.