Home / 13,638.78-20,463.30-11,030.58

Finding the Fourth Proportional to 13,638.78, 20,463.30 and 11,030.58

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Solution

The fourth proportional to 13,638.78, 20,463.30 and 11,030.58 is: 16,550.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.78 : 20,463.30 = 11,030.58 : x
  2. Step 2: Convert to fraction form
    13,638.78/20,463.30 = 11,030.58/x
  3. Step 3: Cross multiply
    13,638.78x = 20,463.30 × 11,030.58
  4. Step 4: Simplify right side
    13,638.78x = 225,722,067.71
  5. Step 5: Solve for x
    x = 225,722,067.71/13,638.78
  6. Step 6: Final answer
    x = 16,550.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.