Home / 13,868.71-19,138.77-7,581.09

Finding the Fourth Proportional to 13,868.71, 19,138.77 and 7,581.09

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Solution

The fourth proportional to 13,868.71, 19,138.77 and 7,581.09 is: 10,461.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.71 : 19,138.77 = 7,581.09 : x
  2. Step 2: Convert to fraction form
    13,868.71/19,138.77 = 7,581.09/x
  3. Step 3: Cross multiply
    13,868.71x = 19,138.77 × 7,581.09
  4. Step 4: Simplify right side
    13,868.71x = 145,092,737.86
  5. Step 5: Solve for x
    x = 145,092,737.86/13,868.71
  6. Step 6: Final answer
    x = 10,461.88

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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.