Home / 13,515.90-20,242.50-13,048.68

Finding the Fourth Proportional to 13,515.90, 20,242.50 and 13,048.68

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Solution

The fourth proportional to 13,515.90, 20,242.50 and 13,048.68 is: 19,542.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.90 : 20,242.50 = 13,048.68 : x
  2. Step 2: Convert to fraction form
    13,515.90/20,242.50 = 13,048.68/x
  3. Step 3: Cross multiply
    13,515.90x = 20,242.50 × 13,048.68
  4. Step 4: Simplify right side
    13,515.90x = 264,137,904.90
  5. Step 5: Solve for x
    x = 264,137,904.90/13,515.90
  6. Step 6: Final answer
    x = 19,542.75

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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.