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Finding the Fourth Proportional to 18,709.01, 28,064.75 and 6,228.53

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Solution

The fourth proportional to 18,709.01, 28,064.75 and 6,228.53 is: 9,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.01 : 28,064.75 = 6,228.53 : x
  2. Step 2: Convert to fraction form
    18,709.01/28,064.75 = 6,228.53/x
  3. Step 3: Cross multiply
    18,709.01x = 28,064.75 × 6,228.53
  4. Step 4: Simplify right side
    18,709.01x = 174,801,965.85
  5. Step 5: Solve for x
    x = 174,801,965.85/18,709.01
  6. Step 6: Final answer
    x = 9,343.20

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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.