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Finding the Fourth Proportional to 28,426.41, 42,641.06 and 7,650.09

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Solution

The fourth proportional to 28,426.41, 42,641.06 and 7,650.09 is: 11,475.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.41 : 42,641.06 = 7,650.09 : x
  2. Step 2: Convert to fraction form
    28,426.41/42,641.06 = 7,650.09/x
  3. Step 3: Cross multiply
    28,426.41x = 42,641.06 × 7,650.09
  4. Step 4: Simplify right side
    28,426.41x = 326,207,908.44
  5. Step 5: Solve for x
    x = 326,207,908.44/28,426.41
  6. Step 6: Final answer
    x = 11,475.52

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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.