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Finding the Fourth Proportional to 18,293.91, 27,437.68 and 5,143.16

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Solution

The fourth proportional to 18,293.91, 27,437.68 and 5,143.16 is: 7,713.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.91 : 27,437.68 = 5,143.16 : x
  2. Step 2: Convert to fraction form
    18,293.91/27,437.68 = 5,143.16/x
  3. Step 3: Cross multiply
    18,293.91x = 27,437.68 × 5,143.16
  4. Step 4: Simplify right side
    18,293.91x = 141,116,296.82
  5. Step 5: Solve for x
    x = 141,116,296.82/18,293.91
  6. Step 6: Final answer
    x = 7,713.84

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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.