Home / 14,008.50-21,012.75-3,620.25

Finding the Fourth Proportional to 14,008.50, 21,012.75 and 3,620.25

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Solution

The fourth proportional to 14,008.50, 21,012.75 and 3,620.25 is: 5,430.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.50 : 21,012.75 = 3,620.25 : x
  2. Step 2: Convert to fraction form
    14,008.50/21,012.75 = 3,620.25/x
  3. Step 3: Cross multiply
    14,008.50x = 21,012.75 × 3,620.25
  4. Step 4: Simplify right side
    14,008.50x = 76,071,408.19
  5. Step 5: Solve for x
    x = 76,071,408.19/14,008.50
  6. Step 6: Final answer
    x = 5,430.38

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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.