Home / 13,860.81-19,129.91-8,200.53

Finding the Fourth Proportional to 13,860.81, 19,129.91 and 8,200.53

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Solution

The fourth proportional to 13,860.81, 19,129.91 and 8,200.53 is: 11,317.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.81 : 19,129.91 = 8,200.53 : x
  2. Step 2: Convert to fraction form
    13,860.81/19,129.91 = 8,200.53/x
  3. Step 3: Cross multiply
    13,860.81x = 19,129.91 × 8,200.53
  4. Step 4: Simplify right side
    13,860.81x = 156,875,359.85
  5. Step 5: Solve for x
    x = 156,875,359.85/13,860.81
  6. Step 6: Final answer
    x = 11,317.91

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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.