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Finding the Fourth Proportional to 28,632.89, 42,953.43 and 8,913.44

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Solution

The fourth proportional to 28,632.89, 42,953.43 and 8,913.44 is: 13,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,632.89 : 42,953.43 = 8,913.44 : x
  2. Step 2: Convert to fraction form
    28,632.89/42,953.43 = 8,913.44/x
  3. Step 3: Cross multiply
    28,632.89x = 42,953.43 × 8,913.44
  4. Step 4: Simplify right side
    28,632.89x = 382,862,821.10
  5. Step 5: Solve for x
    x = 382,862,821.10/28,632.89
  6. Step 6: Final answer
    x = 13,371.43

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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.