Home / 13,996.26-20,988.21-7,420.95

Finding the Fourth Proportional to 13,996.26, 20,988.21 and 7,420.95

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Solution

The fourth proportional to 13,996.26, 20,988.21 and 7,420.95 is: 11,128.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,996.26 : 20,988.21 = 7,420.95 : x
  2. Step 2: Convert to fraction form
    13,996.26/20,988.21 = 7,420.95/x
  3. Step 3: Cross multiply
    13,996.26x = 20,988.21 × 7,420.95
  4. Step 4: Simplify right side
    13,996.26x = 155,752,457.00
  5. Step 5: Solve for x
    x = 155,752,457.00/13,996.26
  6. Step 6: Final answer
    x = 11,128.15

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1.5x scale

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.