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Finding the Fourth Proportional to 28,436.96, 42,655.44 and 7,662.08

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Solution

The fourth proportional to 28,436.96, 42,655.44 and 7,662.08 is: 11,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.96 : 42,655.44 = 7,662.08 : x
  2. Step 2: Convert to fraction form
    28,436.96/42,655.44 = 7,662.08/x
  3. Step 3: Cross multiply
    28,436.96x = 42,655.44 × 7,662.08
  4. Step 4: Simplify right side
    28,436.96x = 326,829,393.72
  5. Step 5: Solve for x
    x = 326,829,393.72/28,436.96
  6. Step 6: Final answer
    x = 11,493.12

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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.