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Finding the Fourth Proportional to 18,801.72, 28,203.12 and 4,950.72

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Solution

The fourth proportional to 18,801.72, 28,203.12 and 4,950.72 is: 7,426.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.72 : 28,203.12 = 4,950.72 : x
  2. Step 2: Convert to fraction form
    18,801.72/28,203.12 = 4,950.72/x
  3. Step 3: Cross multiply
    18,801.72x = 28,203.12 × 4,950.72
  4. Step 4: Simplify right side
    18,801.72x = 139,625,750.25
  5. Step 5: Solve for x
    x = 139,625,750.25/18,801.72
  6. Step 6: Final answer
    x = 7,426.22

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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.