Home / 14,645.20-21,969.60-4,781.80

Finding the Fourth Proportional to 14,645.20, 21,969.60 and 4,781.80

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Solution

The fourth proportional to 14,645.20, 21,969.60 and 4,781.80 is: 7,173.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,645.20 : 21,969.60 = 4,781.80 : x
  2. Step 2: Convert to fraction form
    14,645.20/21,969.60 = 4,781.80/x
  3. Step 3: Cross multiply
    14,645.20x = 21,969.60 × 4,781.80
  4. Step 4: Simplify right side
    14,645.20x = 105,054,233.28
  5. Step 5: Solve for x
    x = 105,054,233.28/14,645.20
  6. Step 6: Final answer
    x = 7,173.29

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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.