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Finding the Fourth Proportional to 19,860.76, 29,792.76 and 9,994.96

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Solution

The fourth proportional to 19,860.76, 29,792.76 and 9,994.96 is: 14,993.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.76 : 29,792.76 = 9,994.96 : x
  2. Step 2: Convert to fraction form
    19,860.76/29,792.76 = 9,994.96/x
  3. Step 3: Cross multiply
    19,860.76x = 29,792.76 × 9,994.96
  4. Step 4: Simplify right side
    19,860.76x = 297,777,444.49
  5. Step 5: Solve for x
    x = 297,777,444.49/19,860.76
  6. Step 6: Final answer
    x = 14,993.26

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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.