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Finding the Fourth Proportional to 30,440.64, 41,990.96 and 17,862.96

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Solution

The fourth proportional to 30,440.64, 41,990.96 and 17,862.96 is: 24,640.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,440.64 : 41,990.96 = 17,862.96 : x
  2. Step 2: Convert to fraction form
    30,440.64/41,990.96 = 17,862.96/x
  3. Step 3: Cross multiply
    30,440.64x = 41,990.96 × 17,862.96
  4. Step 4: Simplify right side
    30,440.64x = 750,082,838.84
  5. Step 5: Solve for x
    x = 750,082,838.84/30,440.64
  6. Step 6: Final answer
    x = 24,640.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.