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Finding the Fourth Proportional to 28,894.84, 43,333.68 and 12,254.64

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Solution

The fourth proportional to 28,894.84, 43,333.68 and 12,254.64 is: 18,378.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,894.84 : 43,333.68 = 12,254.64 : x
  2. Step 2: Convert to fraction form
    28,894.84/43,333.68 = 12,254.64/x
  3. Step 3: Cross multiply
    28,894.84x = 43,333.68 × 12,254.64
  4. Step 4: Simplify right side
    28,894.84x = 531,038,648.28
  5. Step 5: Solve for x
    x = 531,038,648.28/28,894.84
  6. Step 6: Final answer
    x = 18,378.32

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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.