Home / 13,262.79-18,297.95-8,221.80

Finding the Fourth Proportional to 13,262.79, 18,297.95 and 8,221.80

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Solution

The fourth proportional to 13,262.79, 18,297.95 and 8,221.80 is: 11,343.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,262.79 : 18,297.95 = 8,221.80 : x
  2. Step 2: Convert to fraction form
    13,262.79/18,297.95 = 8,221.80/x
  3. Step 3: Cross multiply
    13,262.79x = 18,297.95 × 8,221.80
  4. Step 4: Simplify right side
    13,262.79x = 150,442,044.20
  5. Step 5: Solve for x
    x = 150,442,044.20/13,262.79
  6. Step 6: Final answer
    x = 11,343.17

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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.