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Finding the Fourth Proportional to 18,317.94, 27,461.91 and 15,188.10

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Solution

The fourth proportional to 18,317.94, 27,461.91 and 15,188.10 is: 22,769.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,317.94 : 27,461.91 = 15,188.10 : x
  2. Step 2: Convert to fraction form
    18,317.94/27,461.91 = 15,188.10/x
  3. Step 3: Cross multiply
    18,317.94x = 27,461.91 × 15,188.10
  4. Step 4: Simplify right side
    18,317.94x = 417,094,235.27
  5. Step 5: Solve for x
    x = 417,094,235.27/18,317.94
  6. Step 6: Final answer
    x = 22,769.71

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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.