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Finding the Fourth Proportional to 18,288.57, 27,432.86 and 4,437.57

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Solution

The fourth proportional to 18,288.57, 27,432.86 and 4,437.57 is: 6,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.57 : 27,432.86 = 4,437.57 : x
  2. Step 2: Convert to fraction form
    18,288.57/27,432.86 = 4,437.57/x
  3. Step 3: Cross multiply
    18,288.57x = 27,432.86 × 4,437.57
  4. Step 4: Simplify right side
    18,288.57x = 121,735,214.36
  5. Step 5: Solve for x
    x = 121,735,214.36/18,288.57
  6. Step 6: Final answer
    x = 6,656.36

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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.