Home / 20,295.86-28,016.90-12,340.62

Finding the Fourth Proportional to 20,295.86, 28,016.90 and 12,340.62

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Solution

The fourth proportional to 20,295.86, 28,016.90 and 12,340.62 is: 17,035.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.86 : 28,016.90 = 12,340.62 : x
  2. Step 2: Convert to fraction form
    20,295.86/28,016.90 = 12,340.62/x
  3. Step 3: Cross multiply
    20,295.86x = 28,016.90 × 12,340.62
  4. Step 4: Simplify right side
    20,295.86x = 345,745,916.48
  5. Step 5: Solve for x
    x = 345,745,916.48/20,295.86
  6. Step 6: Final answer
    x = 17,035.29

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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.