Home / 28,715.51-39,621.60-16,776.55

Finding the Fourth Proportional to 28,715.51, 39,621.60 and 16,776.55

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Solution

The fourth proportional to 28,715.51, 39,621.60 and 16,776.55 is: 23,148.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.51 : 39,621.60 = 16,776.55 : x
  2. Step 2: Convert to fraction form
    28,715.51/39,621.60 = 16,776.55/x
  3. Step 3: Cross multiply
    28,715.51x = 39,621.60 × 16,776.55
  4. Step 4: Simplify right side
    28,715.51x = 664,713,611.59
  5. Step 5: Solve for x
    x = 664,713,611.59/28,715.51
  6. Step 6: Final answer
    x = 23,148.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.