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Finding the Fourth Proportional to 14,235.64, 19,644.87 and 7,861.84

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Solution

The fourth proportional to 14,235.64, 19,644.87 and 7,861.84 is: 10,849.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,235.64 : 19,644.87 = 7,861.84 : x
  2. Step 2: Convert to fraction form
    14,235.64/19,644.87 = 7,861.84/x
  3. Step 3: Cross multiply
    14,235.64x = 19,644.87 × 7,861.84
  4. Step 4: Simplify right side
    14,235.64x = 154,444,824.76
  5. Step 5: Solve for x
    x = 154,444,824.76/14,235.64
  6. Step 6: Final answer
    x = 10,849.17

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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.