Home / 28,139.49-38,830.97-16,039.91

Finding the Fourth Proportional to 28,139.49, 38,830.97 and 16,039.91

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Solution

The fourth proportional to 28,139.49, 38,830.97 and 16,039.91 is: 22,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.49 : 38,830.97 = 16,039.91 : x
  2. Step 2: Convert to fraction form
    28,139.49/38,830.97 = 16,039.91/x
  3. Step 3: Cross multiply
    28,139.49x = 38,830.97 × 16,039.91
  4. Step 4: Simplify right side
    28,139.49x = 622,844,989.66
  5. Step 5: Solve for x
    x = 622,844,989.66/28,139.49
  6. Step 6: Final answer
    x = 22,134.20

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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.