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Finding the Fourth Proportional to 19,776.98, 29,655.89 and 7,302.88

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Solution

The fourth proportional to 19,776.98, 29,655.89 and 7,302.88 is: 10,950.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,776.98 : 29,655.89 = 7,302.88 : x
  2. Step 2: Convert to fraction form
    19,776.98/29,655.89 = 7,302.88/x
  3. Step 3: Cross multiply
    19,776.98x = 29,655.89 × 7,302.88
  4. Step 4: Simplify right side
    19,776.98x = 216,573,433.90
  5. Step 5: Solve for x
    x = 216,573,433.90/19,776.98
  6. Step 6: Final answer
    x = 10,950.78

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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.