Home / 20,530.09-30,795.14-11,758.87

Finding the Fourth Proportional to 20,530.09, 30,795.14 and 11,758.87

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Solution

The fourth proportional to 20,530.09, 30,795.14 and 11,758.87 is: 17,638.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.09 : 30,795.14 = 11,758.87 : x
  2. Step 2: Convert to fraction form
    20,530.09/30,795.14 = 11,758.87/x
  3. Step 3: Cross multiply
    20,530.09x = 30,795.14 × 11,758.87
  4. Step 4: Simplify right side
    20,530.09x = 362,116,047.89
  5. Step 5: Solve for x
    x = 362,116,047.89/20,530.09
  6. Step 6: Final answer
    x = 17,638.31

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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.