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Finding the Fourth Proportional to 40,140, 60,210 and 10,956

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Solution

The fourth proportional to 40,140, 60,210 and 10,956 is: 16,434

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,140 : 60,210 = 10,956 : x
  2. Step 2: Convert to fraction form
    40,140/60,210 = 10,956/x
  3. Step 3: Cross multiply
    40,140x = 60,210 × 10,956
  4. Step 4: Simplify right side
    40,140x = 659,660,760
  5. Step 5: Solve for x
    x = 659,660,760/40,140
  6. Step 6: Final answer
    x = 16,434

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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.