Home / 13,752.78-18,945.21-9,964.74

Finding the Fourth Proportional to 13,752.78, 18,945.21 and 9,964.74

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Solution

The fourth proportional to 13,752.78, 18,945.21 and 9,964.74 is: 13,726.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.78 : 18,945.21 = 9,964.74 : x
  2. Step 2: Convert to fraction form
    13,752.78/18,945.21 = 9,964.74/x
  3. Step 3: Cross multiply
    13,752.78x = 18,945.21 × 9,964.74
  4. Step 4: Simplify right side
    13,752.78x = 188,784,091.90
  5. Step 5: Solve for x
    x = 188,784,091.90/13,752.78
  6. Step 6: Final answer
    x = 13,726.98

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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.