Home / 13,125.54-18,110.43-7,822.11

Finding the Fourth Proportional to 13,125.54, 18,110.43 and 7,822.11

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Solution

The fourth proportional to 13,125.54, 18,110.43 and 7,822.11 is: 10,792.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.54 : 18,110.43 = 7,822.11 : x
  2. Step 2: Convert to fraction form
    13,125.54/18,110.43 = 7,822.11/x
  3. Step 3: Cross multiply
    13,125.54x = 18,110.43 × 7,822.11
  4. Step 4: Simplify right side
    13,125.54x = 141,661,775.61
  5. Step 5: Solve for x
    x = 141,661,775.61/13,125.54
  6. Step 6: Final answer
    x = 10,792.83

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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.