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Finding the Fourth Proportional to 19,812.94, 29,731.29 and 7,330.84

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Solution

The fourth proportional to 19,812.94, 29,731.29 and 7,330.84 is: 11,000.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,812.94 : 29,731.29 = 7,330.84 : x
  2. Step 2: Convert to fraction form
    19,812.94/29,731.29 = 7,330.84/x
  3. Step 3: Cross multiply
    19,812.94x = 29,731.29 × 7,330.84
  4. Step 4: Simplify right side
    19,812.94x = 217,955,329.98
  5. Step 5: Solve for x
    x = 217,955,329.98/19,812.94
  6. Step 6: Final answer
    x = 11,000.66

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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.