Home / 14,400.30-21,615.12-13,839.96

Finding the Fourth Proportional to 14,400.30, 21,615.12 and 13,839.96

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Solution

The fourth proportional to 14,400.30, 21,615.12 and 13,839.96 is: 20,774.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,400.30 : 21,615.12 = 13,839.96 : x
  2. Step 2: Convert to fraction form
    14,400.30/21,615.12 = 13,839.96/x
  3. Step 3: Cross multiply
    14,400.30x = 21,615.12 × 13,839.96
  4. Step 4: Simplify right side
    14,400.30x = 299,152,396.20
  5. Step 5: Solve for x
    x = 299,152,396.20/14,400.30
  6. Step 6: Final answer
    x = 20,774.04

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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.