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Finding the Fourth Proportional to 28,719, 43,076.01 and 9,994.20

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Solution

The fourth proportional to 28,719, 43,076.01 and 9,994.20 is: 14,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719 : 43,076.01 = 9,994.20 : x
  2. Step 2: Convert to fraction form
    28,719/43,076.01 = 9,994.20/x
  3. Step 3: Cross multiply
    28,719x = 43,076.01 × 9,994.20
  4. Step 4: Simplify right side
    28,719x = 430,510,259.14
  5. Step 5: Solve for x
    x = 430,510,259.14/28,719
  6. Step 6: Final answer
    x = 14,990.43

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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.