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Finding the Fourth Proportional to 18,835.13, 28,243.04 and 9,955.22

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Solution

The fourth proportional to 18,835.13, 28,243.04 and 9,955.22 is: 14,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,835.13 : 28,243.04 = 9,955.22 : x
  2. Step 2: Convert to fraction form
    18,835.13/28,243.04 = 9,955.22/x
  3. Step 3: Cross multiply
    18,835.13x = 28,243.04 × 9,955.22
  4. Step 4: Simplify right side
    18,835.13x = 281,165,485.68
  5. Step 5: Solve for x
    x = 281,165,485.68/18,835.13
  6. Step 6: Final answer
    x = 14,927.72

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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.