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Finding the Fourth Proportional to 18,051.30, 27,087.30 and 9,731.28

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Solution

The fourth proportional to 18,051.30, 27,087.30 and 9,731.28 is: 14,602.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,051.30 : 27,087.30 = 9,731.28 : x
  2. Step 2: Convert to fraction form
    18,051.30/27,087.30 = 9,731.28/x
  3. Step 3: Cross multiply
    18,051.30x = 27,087.30 × 9,731.28
  4. Step 4: Simplify right side
    18,051.30x = 263,594,100.74
  5. Step 5: Solve for x
    x = 263,594,100.74/18,051.30
  6. Step 6: Final answer
    x = 14,602.50

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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.