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Finding the Fourth Proportional to 28,878, 43,334.28 and 12,462

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Solution

The fourth proportional to 28,878, 43,334.28 and 12,462 is: 18,700.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878 : 43,334.28 = 12,462 : x
  2. Step 2: Convert to fraction form
    28,878/43,334.28 = 12,462/x
  3. Step 3: Cross multiply
    28,878x = 43,334.28 × 12,462
  4. Step 4: Simplify right side
    28,878x = 540,031,797.36
  5. Step 5: Solve for x
    x = 540,031,797.36/28,878
  6. Step 6: Final answer
    x = 18,700.46

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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.