Home / 13,824.16-19,078.71-8,160.77

Finding the Fourth Proportional to 13,824.16, 19,078.71 and 8,160.77

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Solution

The fourth proportional to 13,824.16, 19,078.71 and 8,160.77 is: 11,262.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.16 : 19,078.71 = 8,160.77 : x
  2. Step 2: Convert to fraction form
    13,824.16/19,078.71 = 8,160.77/x
  3. Step 3: Cross multiply
    13,824.16x = 19,078.71 × 8,160.77
  4. Step 4: Simplify right side
    13,824.16x = 155,696,981.30
  5. Step 5: Solve for x
    x = 155,696,981.30/13,824.16
  6. Step 6: Final answer
    x = 11,262.67

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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.