Home / 13,564.88-18,721.08-8,262.80

Finding the Fourth Proportional to 13,564.88, 18,721.08 and 8,262.80

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Solution

The fourth proportional to 13,564.88, 18,721.08 and 8,262.80 is: 11,403.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,564.88 : 18,721.08 = 8,262.80 : x
  2. Step 2: Convert to fraction form
    13,564.88/18,721.08 = 8,262.80/x
  3. Step 3: Cross multiply
    13,564.88x = 18,721.08 × 8,262.80
  4. Step 4: Simplify right side
    13,564.88x = 154,688,539.82
  5. Step 5: Solve for x
    x = 154,688,539.82/13,564.88
  6. Step 6: Final answer
    x = 11,403.61

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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.