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Finding the Fourth Proportional to 18,490.08, 27,712.08 and 9,258.72

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Solution

The fourth proportional to 18,490.08, 27,712.08 and 9,258.72 is: 13,876.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.08 : 27,712.08 = 9,258.72 : x
  2. Step 2: Convert to fraction form
    18,490.08/27,712.08 = 9,258.72/x
  3. Step 3: Cross multiply
    18,490.08x = 27,712.08 × 9,258.72
  4. Step 4: Simplify right side
    18,490.08x = 256,578,389.34
  5. Step 5: Solve for x
    x = 256,578,389.34/18,490.08
  6. Step 6: Final answer
    x = 13,876.54

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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.