Home / 18,810.25-28,215.38-4,771.33

Finding the Fourth Proportional to 18,810.25, 28,215.38 and 4,771.33

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Solution

The fourth proportional to 18,810.25, 28,215.38 and 4,771.33 is: 7,157.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.25 : 28,215.38 = 4,771.33 : x
  2. Step 2: Convert to fraction form
    18,810.25/28,215.38 = 4,771.33/x
  3. Step 3: Cross multiply
    18,810.25x = 28,215.38 × 4,771.33
  4. Step 4: Simplify right side
    18,810.25x = 134,624,965.53
  5. Step 5: Solve for x
    x = 134,624,965.53/18,810.25
  6. Step 6: Final answer
    x = 7,157.00

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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.