Home / 13,651.77-20,478.06-5,331.45

Finding the Fourth Proportional to 13,651.77, 20,478.06 and 5,331.45

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Solution

The fourth proportional to 13,651.77, 20,478.06 and 5,331.45 is: 7,997.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.77 : 20,478.06 = 5,331.45 : x
  2. Step 2: Convert to fraction form
    13,651.77/20,478.06 = 5,331.45/x
  3. Step 3: Cross multiply
    13,651.77x = 20,478.06 × 5,331.45
  4. Step 4: Simplify right side
    13,651.77x = 109,177,752.99
  5. Step 5: Solve for x
    x = 109,177,752.99/13,651.77
  6. Step 6: Final answer
    x = 7,997.33

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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.