Home / 20,280.92-30,357.66-12,893.72

Finding the Fourth Proportional to 20,280.92, 30,357.66 and 12,893.72

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Solution

The fourth proportional to 20,280.92, 30,357.66 and 12,893.72 is: 19,300.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.92 : 30,357.66 = 12,893.72 : x
  2. Step 2: Convert to fraction form
    20,280.92/30,357.66 = 12,893.72/x
  3. Step 3: Cross multiply
    20,280.92x = 30,357.66 × 12,893.72
  4. Step 4: Simplify right side
    20,280.92x = 391,423,167.90
  5. Step 5: Solve for x
    x = 391,423,167.90/20,280.92
  6. Step 6: Final answer
    x = 19,300.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.