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Finding the Fourth Proportional to 13,808.48, 19,066.95 and 11,256.65

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Solution

The fourth proportional to 13,808.48, 19,066.95 and 11,256.65 is: 15,543.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.48 : 19,066.95 = 11,256.65 : x
  2. Step 2: Convert to fraction form
    13,808.48/19,066.95 = 11,256.65/x
  3. Step 3: Cross multiply
    13,808.48x = 19,066.95 × 11,256.65
  4. Step 4: Simplify right side
    13,808.48x = 214,629,887.38
  5. Step 5: Solve for x
    x = 214,629,887.38/13,808.48
  6. Step 6: Final answer
    x = 15,543.34

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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.