Home / 20,039.73-27,649.85-12,957.63

Finding the Fourth Proportional to 20,039.73, 27,649.85 and 12,957.63

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Solution

The fourth proportional to 20,039.73, 27,649.85 and 12,957.63 is: 17,878.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.73 : 27,649.85 = 12,957.63 : x
  2. Step 2: Convert to fraction form
    20,039.73/27,649.85 = 12,957.63/x
  3. Step 3: Cross multiply
    20,039.73x = 27,649.85 × 12,957.63
  4. Step 4: Simplify right side
    20,039.73x = 358,276,525.86
  5. Step 5: Solve for x
    x = 358,276,525.86/20,039.73
  6. Step 6: Final answer
    x = 17,878.31

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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.