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Finding the Fourth Proportional to 18,356.61, 27,536.05 and 5,210.01

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Solution

The fourth proportional to 18,356.61, 27,536.05 and 5,210.01 is: 7,815.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.61 : 27,536.05 = 5,210.01 : x
  2. Step 2: Convert to fraction form
    18,356.61/27,536.05 = 5,210.01/x
  3. Step 3: Cross multiply
    18,356.61x = 27,536.05 × 5,210.01
  4. Step 4: Simplify right side
    18,356.61x = 143,463,095.86
  5. Step 5: Solve for x
    x = 143,463,095.86/18,356.61
  6. Step 6: Final answer
    x = 7,815.34

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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.