Home / 28,436.92-42,655.36-7,660.42

Finding the Fourth Proportional to 28,436.92, 42,655.36 and 7,660.42

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Solution

The fourth proportional to 28,436.92, 42,655.36 and 7,660.42 is: 11,490.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.92 : 42,655.36 = 7,660.42 : x
  2. Step 2: Convert to fraction form
    28,436.92/42,655.36 = 7,660.42/x
  3. Step 3: Cross multiply
    28,436.92x = 42,655.36 × 7,660.42
  4. Step 4: Simplify right side
    28,436.92x = 326,757,972.85
  5. Step 5: Solve for x
    x = 326,757,972.85/28,436.92
  6. Step 6: Final answer
    x = 11,490.62

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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.