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Finding the Fourth Proportional to 18,757.67, 28,140.95 and 5,610.45

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Solution

The fourth proportional to 18,757.67, 28,140.95 and 5,610.45 is: 8,417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.67 : 28,140.95 = 5,610.45 : x
  2. Step 2: Convert to fraction form
    18,757.67/28,140.95 = 5,610.45/x
  3. Step 3: Cross multiply
    18,757.67x = 28,140.95 × 5,610.45
  4. Step 4: Simplify right side
    18,757.67x = 157,883,364.88
  5. Step 5: Solve for x
    x = 157,883,364.88/18,757.67
  6. Step 6: Final answer
    x = 8,417.01

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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.