Home / 13,551.55-20,315.64-5,237.40

Finding the Fourth Proportional to 13,551.55, 20,315.64 and 5,237.40

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Solution

The fourth proportional to 13,551.55, 20,315.64 and 5,237.40 is: 7,851.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.55 : 20,315.64 = 5,237.40 : x
  2. Step 2: Convert to fraction form
    13,551.55/20,315.64 = 5,237.40/x
  3. Step 3: Cross multiply
    13,551.55x = 20,315.64 × 5,237.40
  4. Step 4: Simplify right side
    13,551.55x = 106,401,132.94
  5. Step 5: Solve for x
    x = 106,401,132.94/13,551.55
  6. Step 6: Final answer
    x = 7,851.58

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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.