Home / 14,291.20-19,721.60-8,003.60

Finding the Fourth Proportional to 14,291.20, 19,721.60 and 8,003.60

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Solution

The fourth proportional to 14,291.20, 19,721.60 and 8,003.60 is: 11,044.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,291.20 : 19,721.60 = 8,003.60 : x
  2. Step 2: Convert to fraction form
    14,291.20/19,721.60 = 8,003.60/x
  3. Step 3: Cross multiply
    14,291.20x = 19,721.60 × 8,003.60
  4. Step 4: Simplify right side
    14,291.20x = 157,843,797.76
  5. Step 5: Solve for x
    x = 157,843,797.76/14,291.20
  6. Step 6: Final answer
    x = 11,044.82

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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.