Home / 20,292.60-28,021.74-12,648.92

Finding the Fourth Proportional to 20,292.60, 28,021.74 and 12,648.92

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Solution

The fourth proportional to 20,292.60, 28,021.74 and 12,648.92 is: 17,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.60 : 28,021.74 = 12,648.92 : x
  2. Step 2: Convert to fraction form
    20,292.60/28,021.74 = 12,648.92/x
  3. Step 3: Cross multiply
    20,292.60x = 28,021.74 × 12,648.92
  4. Step 4: Simplify right side
    20,292.60x = 354,444,747.52
  5. Step 5: Solve for x
    x = 354,444,747.52/20,292.60
  6. Step 6: Final answer
    x = 17,466.70

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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.