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Finding the Fourth Proportional to 18,651.16, 27,988.27 and 7,557.94

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Solution

The fourth proportional to 18,651.16, 27,988.27 and 7,557.94 is: 11,341.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,651.16 : 27,988.27 = 7,557.94 : x
  2. Step 2: Convert to fraction form
    18,651.16/27,988.27 = 7,557.94/x
  3. Step 3: Cross multiply
    18,651.16x = 27,988.27 × 7,557.94
  4. Step 4: Simplify right side
    18,651.16x = 211,533,665.36
  5. Step 5: Solve for x
    x = 211,533,665.36/18,651.16
  6. Step 6: Final answer
    x = 11,341.58

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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.