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Finding the Fourth Proportional to 18,586.60, 27,912.30 and 18,003.40

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Solution

The fourth proportional to 18,586.60, 27,912.30 and 18,003.40 is: 27,036.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.60 : 27,912.30 = 18,003.40 : x
  2. Step 2: Convert to fraction form
    18,586.60/27,912.30 = 18,003.40/x
  3. Step 3: Cross multiply
    18,586.60x = 27,912.30 × 18,003.40
  4. Step 4: Simplify right side
    18,586.60x = 502,516,301.82
  5. Step 5: Solve for x
    x = 502,516,301.82/18,586.60
  6. Step 6: Final answer
    x = 27,036.48

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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.