Home / 13,887.23-20,827.13-5,121

Finding the Fourth Proportional to 13,887.23, 20,827.13 and 5,121

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Solution

The fourth proportional to 13,887.23, 20,827.13 and 5,121 is: 7,680.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.23 : 20,827.13 = 5,121 : x
  2. Step 2: Convert to fraction form
    13,887.23/20,827.13 = 5,121/x
  3. Step 3: Cross multiply
    13,887.23x = 20,827.13 × 5,121
  4. Step 4: Simplify right side
    13,887.23x = 106,655,707.13
  5. Step 5: Solve for x
    x = 106,655,707.13/13,887.23
  6. Step 6: Final answer
    x = 7,680.13

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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.