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Finding the Fourth Proportional to 18,575.21, 27,865.25 and 9,810.47

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Solution

The fourth proportional to 18,575.21, 27,865.25 and 9,810.47 is: 14,716.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.21 : 27,865.25 = 9,810.47 : x
  2. Step 2: Convert to fraction form
    18,575.21/27,865.25 = 9,810.47/x
  3. Step 3: Cross multiply
    18,575.21x = 27,865.25 × 9,810.47
  4. Step 4: Simplify right side
    18,575.21x = 273,371,010.79
  5. Step 5: Solve for x
    x = 273,371,010.79/18,575.21
  6. Step 6: Final answer
    x = 14,716.98

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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.