Home / 16,921.44-23,340.76-13,572.30

Finding the Fourth Proportional to 16,921.44, 23,340.76 and 13,572.30

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Solution

The fourth proportional to 16,921.44, 23,340.76 and 13,572.30 is: 18,721.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.44 : 23,340.76 = 13,572.30 : x
  2. Step 2: Convert to fraction form
    16,921.44/23,340.76 = 13,572.30/x
  3. Step 3: Cross multiply
    16,921.44x = 23,340.76 × 13,572.30
  4. Step 4: Simplify right side
    16,921.44x = 316,787,796.95
  5. Step 5: Solve for x
    x = 316,787,796.95/16,921.44
  6. Step 6: Final answer
    x = 18,721.09

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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.