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Finding the Fourth Proportional to 18,288.44, 27,411.95 and 8,407.32

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Solution

The fourth proportional to 18,288.44, 27,411.95 and 8,407.32 is: 12,601.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.44 : 27,411.95 = 8,407.32 : x
  2. Step 2: Convert to fraction form
    18,288.44/27,411.95 = 8,407.32/x
  3. Step 3: Cross multiply
    18,288.44x = 27,411.95 × 8,407.32
  4. Step 4: Simplify right side
    18,288.44x = 230,461,035.47
  5. Step 5: Solve for x
    x = 230,461,035.47/18,288.44
  6. Step 6: Final answer
    x = 12,601.46

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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.