Home / 14,008.28-21,012.78-3,620

Finding the Fourth Proportional to 14,008.28, 21,012.78 and 3,620

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Solution

The fourth proportional to 14,008.28, 21,012.78 and 3,620 is: 5,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.28 : 21,012.78 = 3,620 : x
  2. Step 2: Convert to fraction form
    14,008.28/21,012.78 = 3,620/x
  3. Step 3: Cross multiply
    14,008.28x = 21,012.78 × 3,620
  4. Step 4: Simplify right side
    14,008.28x = 76,066,263.60
  5. Step 5: Solve for x
    x = 76,066,263.60/14,008.28
  6. Step 6: Final answer
    x = 5,430.09

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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.