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Finding the Fourth Proportional to 18,492.96, 27,735.30 and 5,342.40

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Solution

The fourth proportional to 18,492.96, 27,735.30 and 5,342.40 is: 8,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.96 : 27,735.30 = 5,342.40 : x
  2. Step 2: Convert to fraction form
    18,492.96/27,735.30 = 5,342.40/x
  3. Step 3: Cross multiply
    18,492.96x = 27,735.30 × 5,342.40
  4. Step 4: Simplify right side
    18,492.96x = 148,173,066.72
  5. Step 5: Solve for x
    x = 148,173,066.72/18,492.96
  6. Step 6: Final answer
    x = 8,012.40

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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.