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Finding the Fourth Proportional to 30,010.88, 45,003.87 and 11,281.25

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Solution

The fourth proportional to 30,010.88, 45,003.87 and 11,281.25 is: 16,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,010.88 : 45,003.87 = 11,281.25 : x
  2. Step 2: Convert to fraction form
    30,010.88/45,003.87 = 11,281.25/x
  3. Step 3: Cross multiply
    30,010.88x = 45,003.87 × 11,281.25
  4. Step 4: Simplify right side
    30,010.88x = 507,700,020.95
  5. Step 5: Solve for x
    x = 507,700,020.95/30,010.88
  6. Step 6: Final answer
    x = 16,917.20

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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.