Home / 13,265.42-19,891.75-7,720.01

Finding the Fourth Proportional to 13,265.42, 19,891.75 and 7,720.01

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Solution

The fourth proportional to 13,265.42, 19,891.75 and 7,720.01 is: 11,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,265.42 : 19,891.75 = 7,720.01 : x
  2. Step 2: Convert to fraction form
    13,265.42/19,891.75 = 7,720.01/x
  3. Step 3: Cross multiply
    13,265.42x = 19,891.75 × 7,720.01
  4. Step 4: Simplify right side
    13,265.42x = 153,564,508.92
  5. Step 5: Solve for x
    x = 153,564,508.92/13,265.42
  6. Step 6: Final answer
    x = 11,576.30

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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.