Home / 20,760.54-28,649.54-12,807.38

Finding the Fourth Proportional to 20,760.54, 28,649.54 and 12,807.38

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Solution

The fourth proportional to 20,760.54, 28,649.54 and 12,807.38 is: 17,674.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.54 : 28,649.54 = 12,807.38 : x
  2. Step 2: Convert to fraction form
    20,760.54/28,649.54 = 12,807.38/x
  3. Step 3: Cross multiply
    20,760.54x = 28,649.54 × 12,807.38
  4. Step 4: Simplify right side
    20,760.54x = 366,925,649.25
  5. Step 5: Solve for x
    x = 366,925,649.25/20,760.54
  6. Step 6: Final answer
    x = 17,674.19

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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.