Home / 20,760.63-28,649.66-12,377.13

Finding the Fourth Proportional to 20,760.63, 28,649.66 and 12,377.13

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Solution

The fourth proportional to 20,760.63, 28,649.66 and 12,377.13 is: 17,080.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.63 : 28,649.66 = 12,377.13 : x
  2. Step 2: Convert to fraction form
    20,760.63/28,649.66 = 12,377.13/x
  3. Step 3: Cross multiply
    20,760.63x = 28,649.66 × 12,377.13
  4. Step 4: Simplify right side
    20,760.63x = 354,600,566.28
  5. Step 5: Solve for x
    x = 354,600,566.28/20,760.63
  6. Step 6: Final answer
    x = 17,080.43

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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.