Home / 20,760.76-28,650.54-11,807.74

Finding the Fourth Proportional to 20,760.76, 28,650.54 and 11,807.74

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Solution

The fourth proportional to 20,760.76, 28,650.54 and 11,807.74 is: 16,295.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.76 : 28,650.54 = 11,807.74 : x
  2. Step 2: Convert to fraction form
    20,760.76/28,650.54 = 11,807.74/x
  3. Step 3: Cross multiply
    20,760.76x = 28,650.54 × 11,807.74
  4. Step 4: Simplify right side
    20,760.76x = 338,298,127.18
  5. Step 5: Solve for x
    x = 338,298,127.18/20,760.76
  6. Step 6: Final answer
    x = 16,295.07

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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.