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Finding the Fourth Proportional to 28,711.87, 43,064.39 and 7,653.49

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Solution

The fourth proportional to 28,711.87, 43,064.39 and 7,653.49 is: 11,479.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.87 : 43,064.39 = 7,653.49 : x
  2. Step 2: Convert to fraction form
    28,711.87/43,064.39 = 7,653.49/x
  3. Step 3: Cross multiply
    28,711.87x = 43,064.39 × 7,653.49
  4. Step 4: Simplify right side
    28,711.87x = 329,593,031.93
  5. Step 5: Solve for x
    x = 329,593,031.93/28,711.87
  6. Step 6: Final answer
    x = 11,479.33

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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.