Home / 13,688.77-20,530.01-3,828.74

Finding the Fourth Proportional to 13,688.77, 20,530.01 and 3,828.74

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Solution

The fourth proportional to 13,688.77, 20,530.01 and 3,828.74 is: 5,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.77 : 20,530.01 = 3,828.74 : x
  2. Step 2: Convert to fraction form
    13,688.77/20,530.01 = 3,828.74/x
  3. Step 3: Cross multiply
    13,688.77x = 20,530.01 × 3,828.74
  4. Step 4: Simplify right side
    13,688.77x = 78,604,131.38
  5. Step 5: Solve for x
    x = 78,604,131.38/13,688.77
  6. Step 6: Final answer
    x = 5,742.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.